After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone. Use the information from the diagram to answer. In which crash did the cone experience a stronger force? How do you know?
Answers
The crash where the cone experience a stronger force is option D because: Crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Does it take a stronger force to slow something down?The ball is drawn back to Earth by gravitational force. The ball returns to Earth as a result of friction. The ball is forced back toward Earth by magnetic force.
A puck's velocity changes when a player makes contact with it when it is still. He causes the puck to speed up, in other terms. The hockey stick's force, which causes the acceleration, is responsible. The velocity grows as long as this force is in motion.
Therefore, the force applied to an object must be larger than what is required for a progressive slowing down if the object must be slowed down quickly. For instance, a bicycle's brakes will slow or stop it more quickly the more force is given to it.
Learn more about Force from
https://brainly.com/question/12785175
#SPJ1
See full question below
After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone.
Use the information from the diagram to answer.
In which crash did the cone experience a stronger force? How do you know?
answer choices
There was no force on the cone. In both crashes, only the hockey puck experienced a force.
The diagram doesn’t tell you anything about the force on the cone. It only gives information about the force on the pucks.
It was the same force in both crashes; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.
Crash 1; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Related Questions
the s^2+ ion differs from the S atom in S^2+ that ion has a
Answers
Answer:
Explanation: The S^2+ ion would contain a smaller atomic radius when compared to the atomic radius of S. With the removal of electrons, the outermost electrons experience less shielding, and thus experience a greater columbic force, and effective nuclear charge. Pulling in the outside electrons closer to the nucleus, consequently shrinking the atomic radius.
when aqueous solutions of iron(iii) sulfate and potassium phosphate are combined, solid iron(iii) phosphate and a solution of potassium sulfate are formed. the net ionic equation for this reaction is:
Answers
The solubility laws that regulate ionic chemicals in an aqueous solution are the main focus of double replacement reactions. The insoluble iron(III) phosphate, FePO4, precipitates out of the solution when these two solutions are combined because the iron(III) cations and phosphate anions combine to make it.
FeBr3(aq)+K3PO4(aq)→FePO4(s)⏐↓+3KBr(aq)
Ionic equations are chemical formulas in which the electrolytes in aqueous solution are stated as dissociated ions, in contrast to molecular equations, which express compounds as molecules. The ionic species are typically followed by (aq) in the equation to denote that they are in an aqueous solution, and the substance in question is typically a salt that has been dissolved in water.
To know more about solubility, click the below link
https://brainly.com/question/28170449
#SPJ4
which list contains only strong acids? (5 points) a. hcl, hno3, hf, hclo4 b. h2so4, h3po4, hclo4, nh3 c. hno3, h2so4, naoh, h3po4 d. hcl, hno3, h3po4, hclo4 e. hcl, h2so4, hclo4, hi
Answers
a. hcl, hno3, hf, hclo4 b. h2so4 list contains only strong acids.
Chloric acid, hydrochloric acid, hydrochloric acid, hydroiodic acid, nitric acid, perchloric acid, and sulfuric acid are the 7 main acids. These are strong acids since they can completely dissociate in water. A strong acid is described as an acetone that completely disintegrates when added to water. Because the hydrochloric acid inside the preceding example donates every one of its protons to the remedy and totally dissolves, it is classified as a strong acid.
learn more about strong acids here:
https://brainly.com/question/16749233
#SPJ4
(d) Caesium is another element in Group 1 of the Periodic Table.
(i) The table below lists some statements about the reaction of caesium with
cold water compared to the reaction of lithium with cold water.
Place ticks (✓) in the boxes to show the two correct statements.
the reaction with caesium is more vigorous
the reaction with caesium produces a different gas
the reaction with caesium produces an acidic solution
the reaction with caesium produces a different compound
the reaction of caesium is endothermic
Answers
Answer: The reaction with caesium is more vigourus.
The reaction with caesium produces different compund.
Explanation:
Cold water and cesium react to produce hydrogen gas and a mixture of cesium and hydroxide ions as byproducts.
according to the building-up principle or aufbau principle, which subshell is typically filled next after the 6s subshell?
Answers
Aufbau's principle states that an electron in an atom is filled according to the energy of orbitals, orbital with minimum energy is first filled, and so on.
so the order of filling of electrons in orbitals are 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p 8s.
so, the 4f subshell is filled after the complete filling of electrons in 6s.
know more about "Aufbau's principle" here:
brainly.com/question/15006708
If an atom, such as hydrogen, is able to form a covalent bond, describe what happens when the
electron shells of two atoms overlap?
Answers
The potential energy between the nuclei is minimized and the orbital shells overlap.
What is a covalent bond?We know that a covalent bond is the kind of bond that is formed when there is the combination of two atoms when there is the overlap of the orbitals of the two atoms. In the case of the hydrogen atoms, we can say that there is a bond as we notice that the two atomic orbitals have become overlapped on each other.
Let us note that when the two atoms are still far from each other, the potential energy between the atoms is high and as such the atoms of the element would tend to repel each other.
As the two atoms begin to approach each other, the repulsion between the nuclei of the elements is seen to become minimized and the bond is now seen to be formed as the atomic orbitals become overlapped.
Learn more covalent bond:https://brainly.com/question/10777799
#SPJ1
How can we increase a pulley's output force?
Answers
Answer:
Two ways is by reducing the mass of the pulley we can increase its efficiency and by applying more force than usual
Explanation:
the epicardial fat pad . a. can be mistaken for a pericardial effusion b. appears heteroechoic and moves with the heart c. is always visible in all cardiac views d. all of the above e. a and b onl
Answers
The epicardial fat pad . a. can be mistaken for a pericardial effusion b. appears heteroechoic and moves with the heart.
It is the posterior fat pad that is a sign that indicates a pathology when one looks at an x-ray. When a crescent fat is observed in the x-ray, it indicates there is an elbow joint effusion since normally the posterior fat cannot be seen from the x-ray.
In radiography, X-rays are used to view inner parts of the body for medical observation, analysis and to know the treatment procedure to adopt.
When a non visible posterior fat pad on a well-exposed, then it generally suggests a negative study for injury. This means that the features observed are unrelated to any type of injury. This eliminates option c.
Therefore, only option a and b are correct that the epicardial fat pad . a. can be mistaken for a pericardial effusion b. appears heteroechoic and moves with the heart.
To know more about fat pad, refer: https://brainly.com/question/13933231
#SPJ4
F. According to the rules for naming compounds that you learned in this course, what is the
chemical name of this new product? What is its common name? (2 points)
Answers
Molecular compounds are termed by using the stem of the first element's name plus the suffix -ide, followed by the second element. Numerical prefixes are used to specify the number of atoms in a molecule.
What does "chemical common name" mean?The IUPAC defines a common name as one that clearly identifies a chemical but does not adhere to the current systematic naming convention. Acetone, which bears the scientific term, serves as an illustration of a common name. 2-propanone
What is the short answer to chemical?A chemical is any substance whose composition is known. A chemical always consists of the same "substance," to put it another way. Water is one of the substances found in nature.
To know more about Molecular compounds visit:-
https://brainly.com/question/20920787
#SPJ1
a brittle white crystalline solid has a melting point of 760 c and reacts when added to water. this substance is most likely what type of solid
Answers
A brittle white crystalline solid reacts with when added to water is Quartz. It is a metamorphic solid.
Quartz is the most abundant silica mineral. Pure Quartz is colorless and transparent. It occurs in most igneous and practically all metamorphic and sedimentary rocks. It is used as a component of numerous industrial materials. Silicon (Si) has the atomic number 14 and is closely related to carbon. It is a relatively inert metalloid. Silicon is often used for microchips, glass, cement, and pottery. Silica is the most abundant mineral found in the crust of the earth. One of the most common uses of silica quarts is the manufacturer of glass. Quartz is the second most abundant mineral in the Earth's crust. Its chemical name is SiO2.
To learn more about Quartz please visit:
https://brainly.com/question/19451647
#SPJ4
Please help with this:
Typically, hard water used in a lab class would have been prepared by adding 1 gram of
magnesium sulfate per liter of distilled water. Magnesium sulfate contains 20.2%
magnesium ions by mass. What is its hardness in grains per gallon (GPG)? (One GPG
equals 17.1 mg/L.)
Answers
One grain of calcium carbonate, or 64.8 milligrams, is dissolved in one US gallon of water to represent one grain per gallon (gpg), a measure of water hardness (3.785412 L).
What is Water Hardness Measurement Scales?Understanding your test findings necessitates familiarity with the many water hardness testing scales that are employed. The majority of results are provided as a number that indicates the amount of calcium carbonate or calcium carbonate equivalents present in a specific unit of water. Depending on the measurement method, this value may be given in grains per gallon (gpg), parts per million (ppm), or milligrammes per litre (mg/L).Per Gallon of Grains Measurement of water hardnessThe hardness scale, expressed in gpg of calcium carbonate, can be seen as follows, according to the Water Quality Association:Soft is defined as gpg less than 1.An intermediate level of difficulty is between 1 and 3.5 gpg.The category of fairly challenging ranges from 3.5 to 7 gpg.The hard range is between 7 and 10.5 gpg.It's regarded quite difficult to get above 10.5 gpg.To Learn more About grain per gallon refer to:
https://brainly.com/question/2350304
#SPJ1
Diazomethane is a toxic yellow gas that is both sensitive and explosive: However, it is a useful reagent in the laboratory to make key intermediates by reacting with carboxylic acids in a quick and clean reaction_ Draw the expected organic product of diazomethane with the following carboxylic acid. COOH Hc N=N; CH3
Answers
Methyl esters are created when carboxylic acids and diazomethane interact. Diazomethane is used to create methyl esters and has a high degree of reactivity.
Diazomethane reacts swiftly and extremely effectively, producing just N2 as a byproduct, making it an appealing alkylating agent for carboxylic and phenols (Black, 1983). As it responds, its inherent yellow color releases, automatically indicating the status of the reaction. Methyl esters are created when carboxylic acids and diazomethane interact. Diazomethane is created in-situ and then interacted with the carboxyl group right away to create the methyl ester due to its high reactivity. Diazomethane has mostly been used to transform carboxylic acids into esters (diazoalkales) that may be examined using GC/MS or HPLC-MS. In etherate solutions, methyl esters can be produced at room temperature quickly, thoroughly, and quantitatively.
Learn more about acids
https://brainly.com/question/29426933
#SPJ4
A buffer solution is prepared that is 0.18 M NH3 and 0.27 M NH4Cl. What is the pH of this buffer? Kb for NH3 is 1.8 x 10-5
The correct answer is: 9.08
Can someone explain how to do this for me?
Answers
The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, the pH of this buffer is 5.14. pH is a unitless quantity.
What is pH?pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.
On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.
0.18 M =NH₃
0.27 M= NH₄Cl.
Kb of NH₃ = 1.8 × 10⁻⁵
pKb = - log (kb)
= - log (1.8 × 10⁻⁵)
= 4.74
Using Henderson equation
pH = Pkb +ln [ NH₄Cl ]/ [NH₃]
= 4.74 + ln (0.27 /0.18)
= 5.14
Therefore, the pH of this buffer is 5.14.
To learn more about pH, here:
https://brainly.com/question/27945512
#SPJ1
calculate the volume in liters of a mm silver(ii) oxide solution that contains of silver(ii) oxide . round your answer to significant digits.
Answers
The volume of the solution is 1.84 × [tex]10^{4}[/tex] L.
The formula used to get the molarity of the solution is used to determine the volume of the solution:
Molarity= [tex]\frac{Mass of the solute}{molar mass of solute * Volume of solution(in L)}[/tex]
We are given:
Molarity of solution = 8.75 × [tex]10^{-5}[/tex] M
Given the mass of silver (II) oxide = 200 g
Molar mass of silver (II) oxide = 124 g/mol
Put the values in the formula:
8.75 × [tex]10^{-5}[/tex][tex]10^{-5}[/tex] = [tex]\frac{200}{124* Volume}[/tex]
Volume= 1.84 × [tex]10^{4}[/tex] M
A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration. The most used molarity unit in chemistry is the number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units.
To know more about molarity click on the link below:
https://brainly.com/question/17138838
#SPJ4
if we use a to represent the cations (in blue) and x to represent the anions (in green), what is the empirical formula of this ionic compound?
Answers
The empirical formula for the compound if A denotes the cations and X denotes the anions is AX₂
It is given that the cations are denoted by Blue color and the anions with green color. There are 8 atoms in the corners and 6 in the face center. Then,
No of atoms in a total of all corners = 8 x 1/8
No of atoms in the corners = 1
No of atoms in the faces = 6 x 1/2
No of atoms in the faces = 3
Then,
Total no of cations atoms = total number of atoms in the corners + the total number of atoms in the faces
Total number of cations (A) = 1 + 3
Total number of cations (A) = 4
The total number of anions in the cell is 8 from the figures as they aren't shared with another lattice arrangement. Therefore,
Number of anions (X) = 8
Then the empirical formula would be A₄X₈ which could be written in the simplified form of AX₂.
Thus, the empirical formula is AX₂ for the arrangement.
To know more about the arrangement of atoms in solids, click here:
https://brainly.com/question/18924454
#SPJ4
an atom with an imbalance of electrons to protons is a. a hadron. b. a baryon. c. an ion. d. an isotope. e. none of these
Answers
An ion is an atom with an unbalanced ratio of protons to electrons. Atoms or molecules having associated net charges greater than zero are referred to as "ions."
a charged molecule or atom is referred to as an ion. It charges up or down depending on whether one or more electrons are gained or lost. Because of this, it can have a positive or negative charge. Consequently, an ion becomes charged when there is an imbalance between the proportion of positively charged protons to negatively charged electrons. Ions can be categorised into one of two major types. Cations and anions are what they are.A superscript with a plus sign and the number before the plus sign is applied to the chemical formula to represent the symbol for a cation.Anions are represented similarly to cations by the charge number followed by a negative sign.Another subatomic particle with a positive electrical charge is the proton. They are present in the atom's nucleus.
Learn more about ions Refer:brainly.com/question/14982375
#SPJ4
is a chemist has 1.87 moles of na2o and causes it to decompose into its constitiuent elemtns how many moles of na will form
Answers
3.74 moles of Na will be produced after the decomposition of Na₂O.
The decomposition reaction of Na2 is as follows:
2Na₂o → 4Na + o₂
Given, moles of Na₂o = 1.87
From stoichiometric coefficient 2 in Na₂o, after decomposition we get coefficient as 4 of Na. That means the yield of Na is double the reactant.
Hence, the moles of Na after decomposition= 2 x 1.87 = 3.74 moles
Learn more about Stoichiometry:
brainly.com/question/9743981
# SPJ4
consider the following oxides: so2so2 , y2o3y2o3 , mgomgo , cl2ocl2o , and n2o5n2o5 . how many are expected to form acidic solutions in water?
Answers
Nonmetal oxides form acid solutions. SO2, Cl2O, and N2O5 are acid solutions.
A chemical that offers off hydrogen ions in water and paperwork salts through combining with positive metals. Acids have a sour flavor and turn positive dyes purple. a few acids made by using the body, such as gastric acid, can assist organs work the way they must. An example of an acid is hydrochloric acid.
An acidic solution has a high attention of hydrogen ions, H +start superscript, plus, stop superscript, greater than that of pure water. An acidic solution is a liquid combination that happens when hydrogen ions are launched while mixed with water. This definition is known as the Brønsted-Lowry theory: acids provide hydrogen protons, at the same time as bases "accept" hydrogen protons. some answers are more acidic than others.
Learn more about acid solutions here:- https://brainly.com/question/14102151
#SPJ4
which halogen forms the weakest bond to carbon? rev: 12 08 2020 qc cs-243801 multiple choice f cl br i
Answers
The halogen forms the weakest bond to carbon is Iodine due to vary size difference between iodine and a carbon
Iodine is a chemical element with the symbol I and atomic number 53. It is a halogen, which means it is a highly reactive, nonmetal element that occurs in the periodic table among the highly reactive nonmetals. Iodine is a blue-black, lustrous solid that sublimates (turns from a solid directly into a gas) at standard temperature and pressure. It has a melting point of 386.85 degrees Fahrenheit (193.65 degrees Celsius) and a boiling point of 575.1 degrees Fahrenheit (302.9 degrees Celsius). Iodine is an essential trace element in the human body. It plays a vital role in the production of thyroid hormones, which are important for normal growth and development. The thyroid gland, located in the neck, absorbs iodine from the blood and uses it to produce thyroid hormones. Iodine deficiency can lead to goiter, a condition characterized by an enlarged thyroid gland.
To know more about Iodine visit : https://brainly.com/question/20535640
#SPJ4
how to balance: CaCl2(aq) + Na3PO4(aq) ⟶ Ca3(PO4)2(s) + NaCl(aq)
can someone explain how to do it? thanks
Answers
The given double displacement reaction can be balanced as written below:
[tex]\rm 3CaCl_{2} + 2Na_{3}PO_{4} \rightarrow Ca_{3}PO_{4} + 6 NaCl \\[/tex]
What is displacement reaction?Displacement reactions are those in which one or two groups are replaced to form the new products. There are both single displacement reaction and double double displacement reactions.
In single displacement reactions, only one reactant will be replaced in the reaction whereas in double displacement reactions, two groups from the reactants are exchanged each other.
In the given reaction, the phosphate group is replaced to Ca and the Cl is group is shifted to Na metal as written in the chemical equation.
To find more on displacement reaction, refer here:
https://brainly.com/question/29307794
#SPJ1
Draw the Lewis structure for SF6 and then answer the following questions that follow.
-Do not include overall ion charges or formal charges in your drawing.
Questions:
1). What is the electron-pair geometry for S in SF6?
2). What is the shape (molecular geometry) of SF6?
Answers
SF6 molecular geometry will be octahedral because if we look at the structure sulphur hexafluoride has a central sulphur atom around which12 electrons or 6 electron pairs are present and there are no lone pairs.
What is SF6?Sulphur hexafluoride – also known as SF6 – is a ‘greenhouse gas’ that has long played a part in global warming, similar to that of carbon dioxide (CO2).CO2 has been a focal point of climate change for many years. Released from the burning of fossil fuels and other carbon-intensive practices, it creates a cover that traps heat from the sun in the earth’s atmosphere, warming the planet and the oceans. This is what’s known as the ‘greenhouse effect’.SF6 also has this effect, but is much more potent than CO2. Today, wider understanding of the potency of this gas – and the need to reach net zero carbon emissions by 2050 in order to tackle climate change – is causing a rethink of its use.To learn more about ‘greenhouse effect’ refer to:
https://brainly.com/question/19521661
#SPJ4
HI(aq)+Rb2S(aq)→ What is the answer to this please
Answers
The given equation is a double displacement reaction. It can be balanced as follows:
[tex]\rm 2HI + Rb_{2}S \rightarrow H_{2}S + RbI_{2}[/tex]
What is displacement reaction?Displacement reaction is a type of reaction in which one or two group from the reactants displaces by other groups. There are both single displacement and double displacement.
In single displacement reaction, only one group is displaced. Whereas, in double displacement reactions, two groups are displaced each other between reactants.
In the given reaction, the iodine atom and sulphide group are displacing as written in the equation.
To find more on displacement reaction, refer here:
https://brainly.com/question/29307794
#SPJ1
this is the chemical formula for cassiterite (tin ore): a geochemist has determined by measurements that there are moles of tin in a sample of cassiterite. how many moles of oxygen are in the sample? round your answer to significant digits.
Answers
There are two moles of oxygen in cassiterite (tin ore), SnO2, for every mole of tin. As a result, if we have 13 moles of tin, we should have 13 * 2 moles of oxygen. This results in 26 moles of oxygen.
Cassiterite (SnO2) is the most essential tin ore, and it is frequently located in granite veins, granite pegmatites, and greisen. The name is derived from the Greek kassiteros, which means tin.
Cassiterite is a tin oxide mineral with the chemical formula SnO2. It is the primary significant source of tin, accounting for the majority of the world's supply. Primary cassiterite is found in trace amounts in igneous and metamorphic rocks all over the world. It is a mineral that can be found in soils and sediments. Cassiterite is more resistant to deterioration than many other minerals, so it is found in stream and shoreline sediments. Colors include black, brownish black, reddish brown, brown red, yellow, gray, and white.
For more information on Cassiterite, visit :
https://brainly.com/question/18484656
#SPJ4
what is the formal charge on phosphorus in a lewis structure for the phosphate ion that satisfies the octet rule?
Answers
The formal charge on phosphorus in a lewis structure for the phosphate ion that satisfies the octet rule is 0.
What is a Lewis structure?
All valence electrons are represented by Lewis structures, which are structural formulas for molecules and polyatomic ions. These structural formulas are commonly referred to as Lewis dot structures since valence electrons are frequently shown as dots.
Why is Lewis structure used?
Chemical bonds and atomic structures are examined and understood using Lewis structures. The type of bonds created between atoms using valence electrons or/and lone pairs, as well as the number of bonds an atom can or will form with other atoms, can all be determined using Lewis dot diagrams.
Lewis structure of phosphate (po43-) ion.Formal charge= no. of valence electrons - no. of non bonding valence electrons- [tex]\frac{total no. of bonded electrons }{2}[/tex]
Formal charge of P= 5-0-[tex]\frac{10}{2}[/tex] = 0
To know more about Lewis structure:
https://brainly.com/question/20300458
#SPJ4
Draw the Lewis structure for PF3Cl2 in the window below and then answer the questions that follow. What is the electron-pair geometry for P in PF3Cl2 ? What is the the shape (molecular geometry) of PF3Cl2?
Answers
Sp[tex]3[/tex] hybridization of a molecule with two lone pairs is present. This molecule's geometry is determined by its electron pair structure. If more than one bond angle is possible, separate each one with a space.
What is hybridization?The process of combining two atomic orbitals to produce a new variety of hybridized orbitals is described as hybridization. Usually, this mixing creates hybrid orbitals with entirely different energies, shapes, and other characteristics. Atomic orbitals with the same energy level are primarily responsible for hybridization. However, if the energies of the orbitals are equal, the process can involve both fully filled and partially filled orbitals. We can better understand bond formation, bond energies, and bond lengths by using the hybridization concept, which is an extension of valence bond theory. During the hybridization process, which primarily entails the merging of two orbitals, two "p" orbitals, or the mixing of a "s" orbital with a "p," the atomic orbitals of comparable energies are mixed together.To learn more about valence bond theory refer to:
https://brainly.com/question/23129240
#SPJ4
Predict the products and balance the equation.
NaCl (aq) + KNO₂ (aq) →
Answers
Sodium chloride is produced and used in the production of polyester, paper, rubber, glass, chlorine, household bleach, soaps, detergents, and dyes.
Is salt the same as sodium chloride?Chemically speaking, salt is a combination of chloride and sodium. Actually, the element that is most harmful to your health is sodium. (Therefore, the chloride is what gives food its "salty" flavor.).
Why do doctors administer sodium chloride to patients?To replace salt and water that have been lost from your body as a result of specific conditions, sodium chloride 23.4% injection is employed (eg, hyponatremia or low salt syndrome). Additionally, it is added to IV fluids that contain carbohydrates and parenteral nutrition total (TPN).
To know more about sodium chloride visit:
https://brainly.com/question/9811771
#SPJ1
Choose the exothermic reaction that is used to ignite the Mg + Oxygen reaction (step 2) that eventually lights the thermite.
2 H2 + O2 ----> 2 H2O
2 Na + O2 ----> Na2O
CH4 + 2 O2 ----> 2 H2O + CO2
2 C4H10 + 13 O2 ----> 8 CO2 + 5 H2O
Answers
The reaction that can light the thermite is the combination of methane and oxygen. Option C
What is an ignition reaction?There is an ignition reaction when we burn a substance in another substance. Now, we know that an exothermic reaction refers to the kind of reaction hat is able to produce heat.
Since the exothermic reaction can be able to produce heat, this is the reaction that we can use to light the reaction between the magnesium and the oxygen so that we can be able to light the thermite.
Learn more about ignition reaction:https://brainly.com/question/2649564
#SPJ1
nickel has a face-centered cubic (fcc) structure and has a density of 8.90 g/cm3. what is its atomic radius?
Answers
The nickel has a face-centered cubic (fcc) structure and has a density of 8.90 g/cm3. its atomic radius is 1.36 × 10⁻⁸ cm.
given that :
density = 8.90 g/ cm³
the density is given as :
density = mass / volume
no. of atoms = 8 (1/8) + 6(1/2)
volume = (r × 8 (1/8))³
mass = 4 atoms × mol / 6.022 × 10²³ atoms × 58.68 g /mol
density = mass / volume
8.90 g/ cm³ = (4 atoms × mol / 6.022 × 10²³ atoms × 58.68 g /mol ) / (r × 8 (1/8))³
r = 1.36 × 10⁻⁸ cm
Thus, the atomic radius is 1.36 × 10⁻⁸ cm.
To learn more about atomic radius here
https://brainly.com/question/2795197
#SPJ4
The periodic properties of elements are directly related to the A: group position, B: effective nuclear charge , C: energy levels ,D: Atomic Finite boundaries. ,choose the correct answer
Answers
The periodic properties of elements are directly related to the energy levels of the atoms of the elements.
The correct option is C.
What are the periodicity elements in the periodic table?The periodicity of elements in the periodic table is the regular variation of the properties of the elements in the periodic table both down the group and across the periodic.
The properties of elements that show periodicity include;
atomic radiuselectronegativityelectropositivitymetallic characterionization energyelectron affinityLearn more about the periodicity of elements at: https://brainly.com/question/15987580
#SPJ1
what is the nuclear binding energy per mole if the mass defect of a certain isotope is 0.1172 u per atom or 0.1172 g per mol? express your answer in joules. remember to use self-consistent units.
Answers
4.447 x10^13 J is the nuclear binding energy per mole if the mass defect of a certain isotope is 0.1172 u per atom or 0.1172 g per mol? express your answer in joules.
BE = dleta mc^2.
Given that, delta m = mass defect = 0.4941 g per mol = 0.4941/1000 kg/mol c = 3x10^8 m/s
BE = ( 0.4941/1000) x (3x10^8)^2= 4.4469 x10^13
= 4.447 x10^13 J
Nuclear binding energy is energy required to completely separate an atomic nucleus in with its constituting protons and neutrons, or the energy freed by combining protons and neutrons into a single nucleus. Isotopes are atoms that have the same number of protons but number of protons. They have nearly identical chemical composition but differ in volume and thus in physicochemical parameters.
Learn more about Nuclear binding energy here:
https://brainly.com/question/2923968
#SPJ4
