Which group is known as the halogens?
A.01
B.2
C.17
D. 18

Answers

Answer 1

The correct answer is d) 17, because the halogens lie on the left side of the noble gases.

Explain more about halogens?The boiling point and density of halogens rise down the group, as seen in the graph. This is explained by the fact that as atomic size and mass grow, Van der Waals forces get stronger. The transition of an element's phase from gas to liquid to solid allows us to detect this transformation. The only group in the periodic table with 33 states of matter is the halogens. Since hydrogen can be found in both group IA (alkali metals) and group VIIA of several periodic tables due to its ability to create compounds with both oxidation values of +1 and -1. (halogens). Because noble gas configurations for atoms are so stable, elements must either lose or gain electrons to achieve them.

To learn more about halogens refer to:

brainly.com/question/1450671

#SPJ1


Related Questions

How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate is combined with 11.0 g of hydrochloric acid?

Answers

Answer: To determine how many grams of calcium chloride will be produced when 27.0 g of calcium carbonate is combined with 11.0 g of hydrochloric acid, we can use the balanced chemical equation for the reaction:

CaCO3 + 2 HCl -> CaCl2 + H2O + CO2

From the equation, we can see that for every mole of calcium carbonate that reacts, one mole of calcium chloride is produced. We can use the molar masses of each compound to convert the number of grams of each reactant to moles, and then use the mole ratios from the balanced chemical equation to determine the number of moles of calcium chloride produced.

The molar mass of calcium carbonate is 100.09 g/mol, so 27.0 g of calcium carbonate is equal to 0.269 moles. The molar mass of hydrochloric acid is 36.46 g/mol, so 11.0 g of hydrochloric acid is equal to 0.302 moles.

From the balanced chemical equation, we can see that for every mole of calcium carbonate that reacts, two moles of hydrochloric acid are needed. This means that we have an excess of hydrochloric acid, and the limiting reactant in this reaction is calcium carbonate. Therefore, the number of moles of calcium chloride produced will be equal to the number of moles of calcium carbonate consumed, which is 0.269 moles.

To determine the mass of calcium chloride produced, we can multiply the number of moles of calcium chloride by its molar mass. The molar mass of calcium chloride is 110.98 g/mol, so the mass of calcium chloride produced is 0.269 moles * 110.98 g/mol = 29.8 g.

Therefore, when 27.0 g of calcium carbonate is combined with 11.0 g of hydrochloric acid, 29.8 g of calcium chloride will be produced.

3. The accompanying drawing shows part of the orbital diagram for an element.
(a) As drawn, the drawing is incorrect. Why?
(b) How would you correct the drawing without changing the number of electrons?
(c) To which group in the periodic table does the element belong?

Answers

a) There are electrons of parallel spins in the same orbital

b) The electron spins should be converted to antiparallel in the orbital

c) The element belongs to group six.

What is the orbital diagram?

We know that the orbital diagram is the diagram that can be used to show how electrons are arranged in the orbitals of an element. As such, the segment of the orbital diagram that is shown would have to correspond to a give orbital and preferable part of the outermost orbital configuration of the elements that is in question.

The orbital diagram is incorrect because two electrons in the same orbital can be seen to have parallel spins and this against the postulate of the Pauli exclusion rule. We can correct this making one of the electron to have anti parallel spin.

Learn more about orbital diagram:https://brainly.com/question/28809808

#SPJ1

Peripheral chemoreceptors are specialized cells in contact with arterial blood that respond directly to changes in blood ________.A) pHB) PO2C) PCO2D) PCO2 and PO2E) PO2, pH, and PCO2

Answers

Specialized cells called peripheral chemoreceptors in contact with arterial blood react immediately to variations in blood PO2.

Carotid and aortic bodies, which are peripheral chemoreceptors, sense changes in arterial blood oxygen levels and set off reflexes that are crucial for preserving homeostasis in hypoxemia. The carotid (and aortic) bodies, which act as peripheral chemoreceptors, recognise arterial hypoxia and promote breathing. They give the brain stem a constant excitatory input at normal arterial PO2 (PaO2) values (6), and in hypoxia, they react dramatically as PaO2 drops below 70 Torr. With some help from [H+], peripheral chemoreceptors are particularly sensitive to changes in PaO2. The peripheral chemoreceptor hypoxic response predominates in situations where the receptors disagree, such as hypoxic hypocapnia, causing the respiratory drive to increase oxygenation despite additional reductions in CO2.

To learn more about oxygen click here https://brainly.com/question/13370320

#SPJ4

Write the corresponding section of mRNA produced from the following section of DNA template strands: a. 3’ C C G A A G G T T C A C 5’ b. 3’ T A C G G C A A G C T A 5’ 10. What amino acid is coded for by each of the following mRNA codons? a. CCA b. AAC c. GGU d. AGG e. UCU f. UUC g. CGG h. GCA

Answers

The mRNA sequence created by the template strand, 3' A T C G G T T A A C 5', and the coding strand, 5' T A G C C A A T T G, will be 3' G U U A A C C G A U 5'.

What strand is opposite the mRNA strand?

The strand that is complementary to the mRNA is the lower strand. The transcriptional start site (the A) is marked on the coding strand together with the promoter sequence's -35 region (TTGACA) and -10 region (TATATT).

What does the mRNA strand's codon sequence represent?

An individual amino acid is specified by each codon, which are groups of three nucleotides in mRNA.

Learn more about proteins here:

https://brainly.com/question/29776206

#SPJ1

a molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. this is a statement of . group of answer choices the law of conservation of mass the law of constant composition the law of conservation of energy none of the above the law of multiple proportions

Answers

A molecule of water contains hydrogen and oxygen in a 1:8 ratio by mass. this is a statement of the law of constant composition. Option B.

A water molecule is composed of hydrogen atoms and oxygen atoms bonded in a 2:1 ratio. Due to their fixed mass ratios, water molecules obey the law of constant proportions. Another example of a compound that obeys the law of constant ratios is methane.

To illustrate this, consider the production of water from molecular oxygen and hydrogen. Therefore mass is conserved. Conservation of mass can be used in chemical calculations. The law of conservation of mass states that matter cannot be created or destroyed.

Learn more about A molecule here:- https://brainly.com/question/26044300

#SPJ4

cobalt- is radioactive and has a half life of years. how much of a sample would be left after years? round your answer to significant digits. also, be sure your answer has a unit symbol.

Answers

Cobalt-60 is radioactive and has a half life of 5.26 years . amount of 3.60 mg sample would be left after 5.20 years is 1.82 mg.

The half-life t1/2 = 5.26 years

the decay constant , k = 0.693 / t1/2

                                      = 0.693 / 5.26

                                      = 0.1317 / year

the expression is given as :

t = 2.303 / k log No/N

No = 3.60 mg

t = 5.20 yr

5.20 = 2.303 / 0.1317 log 3.60 / N

5.20 = 17.4  log 3.60 / N

log 3.60 / N = 0.2988

3.60 / N = 1.989

N = 1.82 mg

The question is incomplete , the complete question is :

cobalt- is radioactive and has a half life of years. how much of a sample would be left after years? round your answer to significant digits. also, be sure your answer has a unit symbol.

To learn more about half-life here

https://brainly.com/question/17461661

#SPJ4

Which of the following alkyl halides would afford the indicated product upon reaction with sodium ethoxide? I II III or IV?

Answers

IV  alkyl halides would afford the indicated product upon reaction with sodium ethoxide.

Alkoxide salt sodium ethoxide is primarily employed as a potent base in organic reactions such deprotonation, dehydration, and dehalogenation. Water and atmospheric carbon dioxide are both likely to react with sodium ethoxide. Even in solid form, this causes samples that have been preserved to degrade with time. Sodium ethoxide samples eventually turn dark when stored, yet the physical appearance of degraded samples may not be noticeable.  Ethoxide serves as the counterion in sodium ethoxide, an organic monosodium salt. It performs a function as a nucleophilic reagent.

Which of the following alkyl halides would afford the indicated product upon reaction with sodium ethoxide? I II III or IV?

Learn more about sodium ethoxide here:

https://brainly.com/question/14407408

#SPJ4

What is the concentration in ppb of sulfur atoms if 120.0g of water is mixed with 0.00005g of sulfur

Answers

The concentration in ppb of sulfur atoms if 120.0g of water is mixed with 0.00005g of sulfur is 416.7 ppb.

What is the concentration of a solution?

The concentration of a substance is the amount of that substance present in a given amount of solution or solvent.

Concentration can be expressed as a molar concentration or mass concentration.

The molar concentration is the ratio of the moles of the substance and the volume of the solvent or solution.

The mass concentration is the ratio of the substance's mass and the solvent's volume or solution's volume.

The concentration of a solution in parts per billion is equivalent to micrograms per liter of solution.

1 ppb = 1 μg/L

The volume of water = mass/density

The volume of water = 120 g / 1.0 g/mL

The volume of water = 120 mL or 0.12 L

Mass of sulfur atoms = 0.00005 g

Mass of sulfur atoms in μg = 0.00005 g * 10⁶ μg/g

Mass of sulfur atoms in μg = 50 μg

Concentration in ppb =   50 μg / 0.12 L

Concentration in ppb =  416.7 ppb.

Learn more about concentration in ppb at: https://brainly.com/question/13089576

#SPJ1

which of the following is not a network solid? selected answer: correctc. co2(s) correct answer: correctc. co2(s)

Answers

We were aware that SiO2 is a network covalent solid and that CO2 is a molecular solid, but I'm not sure how I would go about determining that.

Each silicon and carbon have the same number of valence electrons, and they both contain two oxygen atoms. Because solid sulfur dioxide is a molecule and has covalent bonds, it is not a network solid even if it is a solid and has covalent bonds. An example of a network solid is diamond. One of the many forms of elemental carbon found in nature, diamond is an allotrope of carbon. On an atomic level, it resembles this. The carbon atoms are linked together by the lines.

Learn more about molecular here-

https://brainly.com/question/4505951

#SPJ4

a valid lewis structure of cannot be drawn without violating the octet rule. group of answer choices nf3 so42- pf3 sbf3 if3

Answers

A valid lewis structure of cannot be drawn without violating the octet rule is IF₃.

According to the octet rule the atoms will be more stable if the valence electrons in the valence are eight electrons.

a) NF₃ = in the lewis structure of  NF₃ the atom will contains the eight valence electrons in the valence shell. thus it follows the octet rule.

b) SO₄²⁻ =  SO₄²⁻ , lewis structure follows the octet rule . atoms contains the eight valence electrons.

c) PF₃ = phosphorus valence electrons is 5 and the fluorine valence electron is 7 and fulfil the octet rule.

d) IF₃ = in the lewis structure IF₃  , it does not follows the octet rule . it  contains the more than eight electrons .

To learn more about lewis structure here

https://brainly.com/question/7026917

#SPJ4

Lithium oxide is used to absorb carbon dioxide:

Li2O(s) + CO2(g) → Li2CO3(s)

What volume of CO2 can 6.77 g of Li2O absorb if the CO2 pressure is 3.5 × 10−4 atm and the temperature is 295 K?

Answers

Answer:160 L of CO₂.

Explanation: Give me brainly please.

The volume of CO₂ absorbed is 0.371 L (or 371 mL) at 3.5 × 10⁻⁴ atm and 295 K.

To calculate the volume of CO₂ absorbed by 6.77 g of Li₂O, we need to use the ideal gas law, which states:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature in Kelvin.

First, calculate the number of moles of CO₂:

Molar mass of Li₂O = 2 * (6.94 g/mol) + 15.999 g/mol ≈ 29.88 g/mol

Moles of Li₂O = 6.77 g / 29.88 g/mol ≈ 0.2263 mol

Now, we can use the given pressure and temperature:

P = 3.5 × 10⁻⁴ atm

T = 295 K

Rearrange the ideal gas law to solve for V:

V = nRT / P

V = (0.2263 mol) * (0.08206 L atm/mol K) * (295 K) / (3.5 × 10⁻⁴ atm)

V ≈ 0.371 L

So, the volume of CO₂ that 6.77 g of Li₂O can absorb at 3.5 × 10⁻⁴ atm and 295 K is approximately 0.371 L (or 371 mL).

To learn more about  ideal gas law  here

https://brainly.com/question/1409639

#SPJ2

at a certain temperature, the equilibrium constant for the following reaction is : h2(g) cl2(g)use this information to complete the following table.

Answers

At a certain temperature, the equilibrium constant for the reaction is 263.16 or 2.6*10^2 and 5.5 * 10^-8.

1. K = ( HCl )^2 / (H2)*(Cl2)

As the value of K is very less so HCl is very less amount and H2 & Cl2.

2. 2HCl = H2 + Cl2  as the reaction is reverse so equilibrium value will be inverse.

K' = 1/K

= 1/ 0.0038

= 263.16 or 2.6*10^2

3.  3H2 + 3 Cl2 = 6 HCl

Reaction is multiplied by 3 so K will be Cube

K' = K^3

= (0.0038)^3

= 5.5 * 10^-8

Equilibrium, in physics, the state of a system when neither its state of motion nor its internal energy state tend to change over time. A simple mechanical body is in equilibrium when it experiences neither linear nor angular acceleration. This state will continue indefinitely unless disturbed by an external force.

Equilibrium occurs for a single particle when the vector sum of all forces acting on the particle is zero. A rigid body (which by definition differs from a particle by its properties of extension), in addition to the states listed above for particles, is in equilibrium when the vector sum of all torques acting on the body is equal to zero, so Its state of rotational motion remains constant.

Learn more about equilibrium here : https://brainly.com/question/517289

#SPJ4

Points A to G are located on the phase diagram of water. Which of the following statements are correct regarding navigation from one point to another across the phase diagram? Check all that apply.
Moving from point A to point C, the temperature increases.
To move from point D to point F, you must decrease both the temperature and the pressure.
At point E, the temperature is less than 0 degree celsius%u2218C
To move from the point G to point F, you must increase both the temperature and the pressure.
To move from point C to point D, you must decrease only the pressure.
To move from point G to point B, you must increase the temperature.

Answers

Since points A to G are located on the phase diagram of water, the statements which are correct regarding navigation from one point to another across the phase diagram include the following:

A. Moving from point A to point C, the temperature increases.

C. At point E, the temperature is less than 0 degree Celsius.

D. To move from the point G to point F, you must increase both the temperature and the pressure.

E. To move from point C to point D, you must decrease only the pressure.

What is a phase diagram?

In Science, a phase diagram can be defined as a type of chart that is typically used for the graphical representation of the thermodynamic conditions or physical states of a chemical substance or mixture of substances, usually under different conditions of temperature and pressure.

This ultimately implies that, a phase diagram is a type of chart (graph) which illustrates the limiting conditions for liquid, solid, and gaseous phases of a chemical substance or mixture of substances.

By critically observing the phase diagram shown in the image attached below, we can reasonably and logically deduce that the temperature increases when we move from point A to point C and it is less than 0 degree Celsius (0°C) at point E.

Read more on temperature here: https://brainly.com/question/29740640

#SPJ1

a 94.0 ml solution of 0.200 m of agno3 reacts with 195.0 ml solution of 0.201 m of nacl to produce silver chloride (agcl) and sodium nitrate (nano3) according to the balanced equationAgNO3 (aq)NaCI(aq) AgCl(s) NaNO3(aq) Determine the limiting reactant for the given reaction O NaCl O AgNO3 O AgCl O NaNO3

Answers

NaCl is the limiting reactant in the given reaction.

You must figure out how many moles of each reactant are present to identify the limiting reactant. Utilizing each solution's concentration and volume can help you achieve this.

You have a volume of 94.0 ml and a concentration of 0.200 M for the AgNO3 solution. The AgNO3 solution has a volume of 0.094 liters after being converted from milliliters to liters by dividing by 1000 ml/L. The number of moles of AgNO3 may then be determined by dividing the concentration by the volume:

moles AgNO3 = concentration × volume

= 0.200 M × 0.094 L

= 0.0188 moles

You have a volume of 195.0 ml and a concentration of 0.201 M for the NaCl solution. The NaCl solution has a volume of 0.195 L after being multiplied by 1000 ml/L to convert the volume to liters. The number of moles of NaCl may then be determined by dividing the concentration by the volume:

moles NaCl = concentration × volume

= 0.201 M × 0.195 L

= 0.0401 moles

Learn more about the chemical reactions at

https://brainly.com/question/16862520?referrer=searchResults

#SPJ4

Using any data you can find in the ALEKS Data resource, calculate the equilibrium constant K at 25.0 °C for the following reaction. N2(g) + 3H2(g) --> 2NH3(g) Round your answer to 2 significant digits.

Answers

The Gibbs energy of reaction

ΔG is related to the equilibrium constant K

according to the expression

ΔG=ΔG∘+RTlnK

where ΔG∘ is the standard Gibbs energy, R is the universal gas constant with value 8.314×10−3kJmol, and T is the temperature.

At equilibrium, the Gibbs energy of reaction is equal to 0,

ΔG0=ΔG∘+RTlnK.

The standard Gibbs energy is the difference of the standard energies of formation of the products and reactants:

ΔG∘=∑nΔG∘f(products)−∑mmΔG∘f(reactants).

The variables n and m are the coefficients for each species.

From the resource, the standard energies of formation for each of these species are:

ΔG∘f(NOCl(g))=66.3kJmol

ΔG∘f(NO(g))=87.6kJmol

ΔG∘f(Cl2(g))=0kJmol

Giving this reaction a standard Gibbs energy of:

ΔG∘=[2ΔG∘f(NO(g))+ΔG∘f(Cl2(g))]−[2ΔG∘f(NOCl(g))]=[2⋅87.6kJmol+0kJmol−[2⋅66.3kJmol]=42.6kJmol

Using this data and the equation above, the equilibrium constant can be solved as:

K=exp[−ΔG∘RT]=exp⎡⎢⎢⎣−42.6kJmol(8.314×10−3kJmol)(298 K

)= 3.41×10−8

Find out more about Gibbs energy

brainly.com/question/16036702

#SPJ4

Conduct research to learn more about
the relative sizes, or atomic radii, of atoms. Find out how scientists define this
property, and identify specific examples

Answers

Chemical elements are classified according to their atomic radius, which is typically the average or typical distance between the centre of the nucleus and the outermost isolated electron.

How to define atomic radii of the atoms and what are its properties?

The total distance from an atom's nucleus to its outermost electron orbital is typically defined as the atomic radius. It can be described more simply as something akin to the radius of a circle, with the nucleus acting as the circle's centre and the outermost orbital of the electron as the circle's perimeter. Trends explain how atomic radii change start to appear as you start moving across or down the periodic table. Some of the properties are:

The reactivity of the elements diminishes as we move down a group of non-metals, but it increases as we move down a group of representative metals.In general, the atomic radius increases when we walk down a group and reduces as we move from left to right in a period. By measuring the separation between the two atoms when two atoms are merged, we may determine the size of the combined atoms.

Know more about atomic radii at:

https://brainly.com/question/3588338

#SPJ1

Is this ammonia a polar or non polar molecule

Answers

ammonia is a polar molecule.

N has a negative charge making the top of the molecule partially negative

H has a positive charge making the bottom of the molecule partially positive

since each end of the molecule is different it means that the molecule is polar, if the molecule was symmetric and the positive charges were evenly spread around the negative charge it would be non polar

match each process of the nitrogen cycle with the form of nitrogen that is produced. labels may be used more than once.

Answers

Matching each process of the nitrogen cycle with the form of nitrogen that is produced is combustion: NO2; decomposition: NH4+; nitrogen fixation: NH4+; denitrification: N2; and nitrification: NO3-.

The nitrogen cycle refers to the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it moves among terrestrial, atmospheric, and marine ecosystems. It is a repeating cycle of processes during which nitrogen circulates through both living and non-living things: the atmosphere, soil, water, plants, animals, and bacteria. In order to move through the different parts of the cycle, nitrogen must change forms. The conversion of nitrogen can be carried out through both biological and physical processes. The nitrogen converts into NO2 through stationary combustion and into NH4+ through decomposition. Fixation converts nitrogen in the atmosphere into forms that plants produce i.e., NH4+. Denitrification is the process that converts nitrate to nitrogen gas, producing N2. Nitrification is the process that converts ammonia to nitrite and then to nitrate producing NO3-.

Learn more about Nitrogen cycle:

https://brainly.com/question/20165857

#SPJ4

Which of the following is an observation of a chemical property?
Ozinc reacts with hydrochloric acid
density of wood is 0.51 g/cm³
water boils at 100°C.
sand paper is roughly textured

Answers

The right answer to the previous question and the correct observation of a chemical property is that zinc reacts with hydrochloric acid.

ZnCl2 +H2 = Zn +2HCL

Balanced equation:  

ZnCl2 + H2 Zn + 2HCL

Zinc is a chemical element, designated by the symbol Zn and the atomic number 30. When the oxidation is removed, zinc turns shiny-greyish and at room temperature turns into a somewhat brittle metal.

All living things, including people, animals, plants, and microorganisms, depend on the trace metal zinc. It is the trace metal that is present in people in the second-highest concentration after iron. Zinc is an essential nutrient for development and a key cofactor for various enzymes. A lack of zinc can lead to a variety of diseases. Deficiency can lead to diarrhoea, infection susceptibility, and slower growth.

To know more about element, visit:

https://brainly.com/question/14347616

#SPJ1

the number of electrons in a neutral atom of an element is always equal to the of the element.

Answers

The number of electrons on a neutral atom is equal to the number of protons in the atom's nucleus, hence the answer is protons. This is referred to as the Z atomic number.

Atoms are neutral, hence there are exactly as many protons as electrons in each atom. All hydrogen atoms contain one electron, which is located outside the nucleus.

The number of protons and electrons in an atom's stable state is always equal to the atomic number. for a steady atom

Protons are positively charged and electrons are negatively charged. The number of electrons and protons in a neutral atom are always equal. The quantity of protons is constant.

To learn more about  neutral please click on below link

https://brainly.com/question/15395418

#SPJ4

Which of the following equations represents a reaction for which the standard entropy change is positive?
a) 3 O₂(g) --> 2 O₃(g)
b) 2 H₂(g) + O₂(g) --> 2 H₂O(l)
c) CaCO₃(s) --> CaO(s) + CO₂(g)
d) I₂(g) + 2 K(s) --> 2KI(s)

Answers

The correct response is A) The change in gaseous moles n g must be largest, indicating the formation of more gaseous products, which enhances unpredictability and, hence, entropy positive.

Entropy increases as a substance transitions from a solid to a liquid to a gas, and by observing the phases of the reactants and products, you can determine if an entropy change is positive or negative. Entropy will rise once the number of gas moles increases. The environment's negative entropy change is significantly outweighed by the system's positive entropy change. We can see that the system's entropy change is positive.

To learn more about positive  please click on below link

https://brainly.com/question/12650352

#SPJ4

What is the concentration in ppb of sulfur atoms if 120.0g of water is mixed with 0.00005g of sulfur

Answers

Answer:

the ppb ratio of sulfur atoms is 1/250.

Explanation: i do math for livin cuh

Atoms will combine with each in order to become more chemically stable. Compound are formed between two atoms that hare outer energy levels. The two types of compounds that can be formed between atoms are ionic and covalent. Ionic compounds are formed between two nonmetal ion. Metals will lose electrons to form positive ions and nonmetals will gain electrons to form negative ions. These oppositely charge ions are very attracted to each other and form very strong bonds as a result. lonic compounds are characterized by crystalline structure, Two: or more pairs of electrons. The force of attraction between the nonmetals is relatively weak. Covalent compounds are characterized by i meting and boiling points and can be gases, liquids, or soft solids at room temperature.

Answers

The majority of stable atoms share electrons. When two atoms share electrons, they establish a covalent bond. The result of sharing electrons are molecules, which are neutral particles.

Why does an atom's outer energy level reach its maximum when it is full?

Due to the fact that all orbitals will be filled, an entire octet is exceedingly stable. A process that increases the stability of the atoms will release energy in the form of heat or light because more stable atoms have less energy.

What increases an atom's stability?

Whether or not an atom's outermost shell is filled with electrons determines how stable the atom is. The atom is stable if the outer shell is filled. Because they are unstable, empty outer shell atoms typically form chemical bonds.

Learn more about neurons here:

https://brainly.com/question/24217914

#SPJ1

Correct the volume of 2.90 L of a gas at –12 °C to the volume occupied at 25 °C. Remember to convert between °C and K.

Answers

The volume occupied at 25 °C. Remember to convert between °C and K. V2 = 3.311 L is the correct answer.

What is volume?

Volume is a measure of the amount of space occupied by an object, or the amount of matter contained within it. It is measured in units such as cubic metres, cubic centimetres, litres, millilitres, etc. Volume is a three-dimensional concept, meaning that it requires three measurements to be taken in order to accurately measure the amount of space an object occupies. The volume of a solid object can be determined by applying the formula V = l x w x h, where l is the length, w is the width, and h is the height of the object. For a liquid or gas, the volume is calculated by measuring its mass and the density of the substance. Volume can also be used to describe the total amount of space something occupies, such as the volume of a room or the volume of a storage container.

Temperature and Volume equation

Given,

The volume at -12°C = 2.90L

Temperature, T1 = -12°C

= (-12°C + 273)

= 261K

And, Volume at 25°C = ?

(25°C + 273)K

= 298K

Now, by using this equation:-

V1/T1 = V2/T2

V2 = V1 x T2/T1

V2 = 2.90L x 298K/261K

V2 = 3.311L

Hence, The volume at  25°C will be 3.311L

To learn more about Temperature and Volume equation

https://brainly.com/question/9956672

#SPJ1

1 Dilute hydrochloric acid reacts with sodium carbonate solution.

2HCl(aq)+Na2CO2(aq) →2NaCl(aq)+H2O(l)+CO2(g)

(a) Explain why effervescence is seen during the reaction.
(b) Dilute hydrochloric acid was titrated with sodium carbonate solution.
10.0cm³ of 0.100mol/dm³ hydrochloric acid were placed in a conical flask.
- A few drops of methyl orange indicator were added to the dilute hydrochloric acid.
- The mixture was titrated with sodium carbonate solution.
16.2cm³ of sodium carbonate solution were required to react completely with the acid.
(i) What colour would the methyl orange indicator be in the hydrochloric acid?
(ii) Calculate how many moles of hydrochloric acid were used.
mol1
(iii) Use your answer to (b)(ii) and the equation for the reaction to calculate the number of moles of sodium carbonate that reacted.
mol [1]
(iv) Use your answer to (b)(iii) to calculate the concentration of the sodium carbonate solution in mol2dm³.
(c) In another experiment, 0.020mol of sodium carbonate were reacted with excess hydrochloric acid.

Calculate the maximum volume (at r.t.p.) of carbon dioxide gas that could be made in this reaction.

Answers

The reaction 0.01 moles of HCL and 0.005 moles of sodium carbonate are employed.

(a) Carbon dioxide gas is released when sodium hydrogen carbonate and diluted hydrochloric acid interact. Carbon dioxide can be detected by passing it through lime water, which turns milky, or by observing the formation of a white precipitate of calcium carbonate. The gas's identity as carbon dioxide is therefore confirmed.

(b) i-When methyl orange is added to diluted hydrochloric acid, the solution's color changes to red. A common pH indicator used in the titration is methyl orange.

ii & iii  Given:

0.1 molar in 10 milliliter With 16.2 ml of sodium carbonate solution, diluted HCL is titrated.

Solution:

How much HCL will be used—in moles.

Solution:

NaCl (aq) + CO2 (g) + H2O = Na2CO3 (aq) + 2 HCl (aq) (l)

Knowing that,

Molarity = (n/v)*100

For HCL remedy

0.1 = [n/10]*100

1.01 moles, or n.

2 moles of HCL are needed for 1 mole of sodium carbonate.

=> Half a mole of sodium carbonate is needed for every mole of HCL.

=> 0.005 mole of sodium carbonate is needed for every 0.01 mole of HCL.

Consequently, 0.01 moles of HCL and 0.005 moles of sodium carbonate are employed.

To learn more about this reaction

https://brainly.com/question/24795637

#SPJ1

PLEASE HELP!!!

1. SEP Develop Models
Use the space to draw electron dot structures to model the bonding in calcium oxide (CaO), calcium chloride (CaCl₂), and potassium nitride (K₂N). As you develop your models, consider the following: Use the diagram for NaCl as a guide for your electron dot structures. After the bond is formed, each ion should have a complete outer electron shell, and the overall charge on the compound should be zero.​

Answers

Answer:

Calcium Oxide must be Ionic, as we have one metal and one non metal involved. the metal is Calcium and the non metal is Oxygen. Meaning Calcium must be the one that transfers (loses) electrons to Oxygen, and Oxygen gains these electrons. It would look something like this:

Because Calcium transfers 2 electrons, it now has 2 more positively charged protons than the total number of electrons, as two electrons are lost. this means Calcium is no longer an atom, as it's positive protons and negative electrons can't cancel and make it neutral, it is now an ion, and a positively charged one at that. Same thing applies for Oxygen, but the opposite. because it has 2 more negative electrons than it's total of positive protons, it is now also an ion, and a negative one at that. The diagrams provided show the charges of the ions.

Potassium Nitrate must also be Ionic, for the same reason as before. the metal is Potassium and the non metal is Nitrogen. However, because Potassium is in Group 1, it only has 1 electron it can transfer to Nitrogen, but Nitrogen needs 2 electrons for a full outer energy level, therefore, we must have two Potassium atoms in this equation. It would look something like this:

Because there are two Potassium ions, each with a +1 charge, this means the overall charge of the Potassium ions is 2+, and this cancels out with the 2- provided by one ion of Nitrogen

Why the sulphides precipitate of group IIA should be washed with distilled water and then centrifuged before addition of dilution solution of HNO3?

Answers

Because of the fact that certain ions and impurities are adsorbed on the precipitate's surface. Precipitate is washed with tap water in order to eliminate these contaminants since water will wash away any pollutants that are still soluble in it.

Why are ions formed?

Ions are electrically charged particles that may be produced by either taking electrons away from neutrality atoms to form positive ions or adding electrons to neutral atom to form negative ions. The quantity of protons remains constant during the creation of an ion.

Are ions a form of energy?

Negative ions are believed to trigger biochemical processes that enhance serotonin levels once they enter our blood, which helps to reduce depression, reduce stress, and improve energy.

To know more about ions visit:

https://brainly.com/question/29183072

#SPJ1

a buffer solution with a ph of 4.31 is prepared with 1.0 m hc2h3o2 and --------m nac2h3o2. the ka of hc2h3o2 is 1.8 x 10^-5.

Answers

The concentration of sodium acetate (NaC₂H₃O₂) in the buffer solution is: 0.029 M.

What is a buffer solution?

A buffer solution is a solution that is resistant to changes in pH when small amounts of an acid or a base are added to it. It is able to do this because it contains both a weak acid and its conjugate base (or a weak base and its conjugate acid).

To determine the concentration of sodium acetate (NaC₂HO₂) in the buffer solution, you can use the Henderson-Hasselbalch equation:

pH = pKa + log([C₂H₃O₂-]/[HC₂H₃O₂])

where [C₂H₃O₂-] is the concentration of the acetate ion (the conjugate base of acetic acid) and [HC₂H₃O₂] is the concentration of acetic acid.

So, Plugging in the given values, we get:

4.31 = -log(1.8 x 10^-5) + log([C₂H₃O₂-]/1.0)

Solving for [C₂H₃O₂-] above, we see that it is = 0.029 M.

Since the concentration of sodium acetate is equal to the concentration of acetate ions, the concentration of sodium acetate in the buffer solution is also 0.029 M.

Learn more about buffer solution from

https://brainly.com/question/27371101
#SPJ1

See full question below

determine the concentration of sodium acetate (NaC₂H₃O₂)) in the buffer solution below.

a buffer solution with a ph of 4.31 is prepared with 1.0 m hc2h3o2 and --------m nac2h3o2. the ka of hc2h3o2 is 1.8 x 10^-5.

What is the mass of the oxygen used during the reaction? Iron (19.43) and iron oxide (20.91).

Answers

The mass of the oxygen used during the reaction is 8.16 g

What is oxygen ?

The chemical element with the atomic number 8 and symbol O is called oxygen. It belongs to the periodic table's chalcogen group, is a very reactive nonmetal, and an oxidizing agent that easily produces oxides with most elements as well as other compounds.

The reaction is as follows ,

4Fe + 3 ⇒ 2

The molar ratio of the reaction  

= 4:3

The four moles of  Fe react with 3 moles of oxygen molecule to produced Iron Oxide .

The mole of iron = mass ÷ molar mass

= 19.43 g ÷ 55.845 g/mole

= 0.34 mole

If four moles of  Fe react with 3 moles of oxygen molecule to produced  Iron Oxide .

The number of moles of oxygen

= 3 moles × 0.34 mole ÷ 4 moles

= 0.22 mole

The mass

= 0.22 × 32

= 8.16 g

Thus, The mass of the oxygen used during the reaction is 8.16 g

To learn more about the oxygen, follow the link;

https://brainly.com/question/1506082

#SPJ1

Oil and methane hydrates are both physical ocean resources found beneath the seafloor. List two other similarities between oil and methane hydrates.

Answers

Crude oil is a mixture of nitrogen, sulphur, oxygen, and volatile hydrocarbons. Methane hydrate is a particular kind of clathrate made up of water and low molecular weight gases like methane.

Fossil deposits under the seafloor are what make up oil. It is an organic chemical that was created by the deposition of organisms on the seafloor. Additionally, methane hydrates are created after marine creatures deposit. Under the ocean's surface, one can find both oil and methane hydrates.

Similarities between both the Oil and methane hydrates are :

They both came from the ocean floor.They come from fossil fuels.They are created by decaying aquatic life.They are an energy source that is not renewable.They were mostly made of hydrogen and carbon.Both contribute to climate danger.Under high pressure and low temperature, they solidified.

To learn more about Oil and methane hydrates refer here

https://brainly.com/question/2416366#

#SPJ4

Other Questions
Multiple capacities emerge when toddlers reach the cognitive stage of pre- operational symbolic regulations, Select the capacities that are NOT part of this developmental step 9 transitivity dramatic and pretend play 12 story telling, fantasy, concepts 15 O representational drawing when sierra presents a speech on why we should have more affordable housing options for college students to her fellow classmates, she can tell that everyone is listening with rapt attention. this is because, per maslow's hierarchy of needs, sierra is appealing to her audience's needs. the process of respiration in root cells can make cations in the soil available for absorption into a root. t/f 171) a force of 16.88 n is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular 171) acceleration of 1.20 rad/s2. calculate the rotational inertia of the wheel. The characteristics of two different types of reactions are shown below: Reaction A: Electrons are gained by the atoms of an element. Reaction B: Protons are lost by the atom of an element. Which statement is true about the atoms of the elements that participate in the two reactions? a Their identity changes in both Reaction A and Reaction B. b Their identity changes in Reaction A but not in Reaction B. c Their identity changes in Reaction B but not in Reaction A. d Their identity remains the same in both Reaction A and Reaction B. as many as ____ percent of all men with severe depression experience some degree of erectile dysfunction. summarize all of the acts of the American revolution and why each are important? one of your customers wants you to build a personal server that he can use in his home. one of his concerns is making sure that he has at least one data backup stored on the server in the event that a disk fails. you have decided to back up his data using raid. since this server is for personal use only, the customer wants to keep costs down. therefore, he would like to keep the number of drives to a minimum. which of the following raid systems would best meet the customer's specifications? RAID 0 RAID 1 RAID 5 RAID 10 Classify the components as most accurately describing cofactors, coenzymes, or neither. Cofactors Coenzymes Neither Answer Bank lipase inorganic ion ascorbic acid CoQ FAD Which statement best describes the Mongol empire? Which of the following cations is isoelectronic with argon? 1.potassium ion 2.calcium ion 3.scandium ion 4.All of these 5.None of these in the general population, 1 in 300 individuals is a carrier for tay-sachs disease, while 1 in 30 individuals of ashkenazi jew descent are carriers. tay-sachs also affects 1 in 30 individuals with french-canadian ancestry, although two completely unique mutations are responsible for the ashkenazi and french-canadian mutations. Part A What are the chances of two individuals having a child with Tay-Sachs if both individuals are not of Ashkenazi or Franch-Canadian descent? Enter your answer using scientific notation. For the multiplication symbol, uso an asterisk ? .366 10 2 Submit Incorrect; Try Again; 5 attempts remaining Part B what are the chances of two Individuals having a hild with Tay-Sachs lf one Individual Is of Ashkenazi descent and one l$ no Submit My Answars Give Up Part C What are the chances of two individuals having a child with Tay-Sachs if both individuais are of Ashkenazi descent? according to hospital protocol, after a client is restrained, the staff meet and discuss the restraint situation. in addition to sharing feelings and offering support, what should the nurse identify as the long-term goal for the debriefing? Consider the following delays for computation in each of the pipeline stages in a MIPS processor: IF:150psID:250psEX: 200 ps MEM:250psWB: 100 ps Given this, what is the latency of a load instruction in a five stage pipelined implementation of this MIPS processor?1000ps1250ps85025010 points Caches exploit and locality to reduce the overall time spent by processors in accessing data from the memory. 10 points Which of the following performance metrics does pipelining improve? Instruction execution time Instruction throughput Both of the above options None of the above In the context of the types of stressor events, ________ refer to a situation that has long duration, such as diabetes, chemical addiction, or racial discrimination. FILL IN THE BLANK. Conversely, if the muscle fiber is overly stretched, there is not enough overlap between the thick and ____________ myofilaments. a remote controlled drone was 924 meters away from a large oak tree it flew north at a constant velocity and reached the oak tree in 88.0 seconds what was the drones velocity If Santa Claus ate two cookies from every child on Earth, how many cookies would he eat over one Christmas Eve? an airplane flies horizontally at a speed of 351 km/h and drops a crate that falls to the horizontal ground below. neglect air resistance.part (a) if the altitude of the plane was 580 m, then how far, horizontally in meters, did the crate move as it fell to the ground? What i cot of tiling a rectangular plot of land 500m long and 200m wide at the rate r 8 per q m