1 br in bro3- the correct formal charge.
How can you determine an atom's formal charge?For each atom in a Lewis structure, you should count how many electrons it "owns" in order to get the formal charges. All of its lone pair electrons as well as 50% of its bonding electrons should be counted. The formal charge is the discrepancy between the atom's number of valence electrons and the number it possesses.
What kind of atom has a formal charge of 1 in this molecule?When the carbon atom has three bonds in addition to one lonely pair of electrons, carbonions are created. Carbanions have a formal charge of 1 and 5 valence electrons.
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In a molecule of water, how many electrons are shared between each hydrogen atom and an oxygen atom?
In a molecule of water, 4 electrons are shared between each hydrogen atom and an oxygen atom.
It is the lowest point in the substance and possesses chemical elements. Atoms don't exist on their own; instead, they combine to create ions and molecules, which combine to create the substances that we can see, feel, and touch. One or more atoms joined together by covalent (chemical) connections make up molecules. Atoms can be imagined as circles with a central nucleus (consisting of protons and neutrons) and one or more concentric circles surrounding it that represent the "shells" or "levels" in which the electrons surrounding the atom's nucleus are located as well as markings that distinguish the electron. every level
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Which one of the following elements will combine with chlorine in a 1:2 ratio to give a formula of XCI2.?NaALMgFC
Magnesium will combine with chlorine in a 1:2 ratio to give a formula of XCI₂.
Positively charged magnesium ions are surrounded by negatively charged chlorine ions, and similarly, negatively charged chlorine ions are surrounded by positively charged magnesium ions in the ionic complex known as magnesium chloride. Magnesium and chlorine mix in a proportion corresponding to their valencies. Chlorine has valency 1, while magnesium has valency 2.
The ionic bond is formed by the attraction of positively charged magnesium ions (Mg⁺²) and negatively charged chlorine ions (Cl⁻). The transfer of electrons from the outer orbits results in the creation of magnesium chloride. This ionic connection aids in completing the process of electron transfer between atoms.
As a result, one molecule of magnesium chloride (MgCl₂) is created by the 1:2 combination of the atoms of magnesium and chlorine.
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Processes come into play during the dehydration process in an oven: question 12 options: heat, low humidity and air current heat, high humidity and air current heat, high humidity and lack of air current none of the choices are correct.
The processes that come into play during the dehydration process in an oven is option A. Heat, low humidity and air current.
What are the methods of dehydration?
Foods can be dried in a number of ways, including the sun, an electric dehydrator, a regular oven, a microwave (just for herbs), air drying, and solar drying.
Note that Food dehydration involves simultaneous mass and heat transfers within the food as well as changes in the energy transfer medium. When food is dehydrated using a process other than hot air, the moisture may need to be removed from the food by means of air or another gas.
Hence, One of the simplest methods for preserving food is dehydration. You don't need to purchase specialized jars, preservers, or equipment. Not even a dehydrator is necessary. Food can be dried in your oven, whether it's a toaster oven or a regular oven.
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part A Choose the correct orbital diagram for titanium. A.[Ar] 1 111.11 4s 3d B.[Ar] 111 4s 3d C.[Ar] | 11 111 4s 3d D.[Ar] 12 4s 3d Submit Request Answer
The correct electronic configuration or orbital diagram for titanium is [Ar] 3d² 4s²; the correct option is D.
What is the nature of the element titanium?The element titanium is a transition metal that has the atomic number 22.
The atomic number of 22 means that there are 22 electrons in the electron shell of titanium.
The electronic configuration of titanium is [Ar] 3d² 4s²
Titanium is used for several purposes such as
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explain why leucoindigo is water-soluble and why blue indigo is not. (you should discuss the change in imfs with water when blue indigo is reduced to leucoindigo).
As indigo makes hydrogen with itself making it non-polar, it remains insoluble in water whereas due to the basic property of leucoindigo, it acts as a polar compound becoming soluble in water.
With itself, indigo forms hydrogen bonds. The molecule is unable to form a connection with water as a result. Additionally, the molecule is quite symmetrical and has polar bonds with oppositely oriented dipole moments that cancel each other out, making it non-polar and insoluble in water. While water cannot dissolve apolar molecules, it may dissolve polar ones. In this manner, the leuco base of indigo is formed, resulting in a polar molecule that may dissolve in water. This leuco base is polar since it is a sodium salt.
What do you mean by polar and non-polar compounds?
Polar compounds are compounds that have slight charges (slightly positive and slightly negative) within the compound. The slight charges are due to electronegativity differences of .3 to 1.4. Nonpolar compounds are compounds that do not have slightly negative and positive charges within the compound. The electronegativity differences of nonpolar compounds are between 0 and .2.
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based on the information you just read what part of the sodium potassium pump would make a potassium solution injection lethal?
The sodium-potassium pump would make a potassium solution injection lethal as chloride is a potassium salt, which increases the blood and cardiac awareness of potassium to forestall the heart via an odd heartbeat and for that reason purpose demise by means of cardiac arrest.
Potassium chloride is the drug that reasons loss of lifestyle in execution below contemporary-day deadly injection protocols and is used in capital punishment and euthanasia, till 2009, maximum states used a three-drug aggregate for lethal injections, an anesthetic (normally sodium thiopental, until pentobarbital emerge as added at the prevent of 2010), pancuronium bromide (a paralytic agent, additionally known as Pavulon), and potassium chloride (stops the coronary heart )
The sodium-potassium pump is a protein pump that's critically critical to the function of neurons. It permits stabilizing membrane functionality, and for that reason is important in developing the situations essential for the firing of motion potentials.
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Carbon disulfide has a vapor pressure of 363 torr at 25 ∘ C and a normal boiling point of 46.3 ∘ C . Find Δ H v a p for carbon disulfide.
The ΔHvap for carbon disulfide is 26.06J.
Derivation of the Clausius Clapeyron Equation in ThermodynamicsAs the temperature rises, so does the water vapor saturation pressure. The rate at which vapour pressure rises for each degree that the temperature rises is determined by the Clausius-Clapeyron equation. Specify p as the saturation vapour pressure and T as the temperature.
In honor of Rudolf Clausius and Benoît Paul Émile Clapeyron, the Clausius Clapeyron equation is a way of explaining a discontinuous phase transformation between two phases of matter of a single constituent. There is no direct relationship between a liquid's temperature and vapour pressure.
Clausius-Clapeyron Equation,
In P = RT/ΔHvap + C
Given,
P = 363 torr,
R = 8.314
T = 46.3°C
C= 25°C
363 = 8.314×46.3/ΔHvap + 25
363 = 384.9/ΔHvap +25
ΔHvap = 384.9/363 + 25
ΔHvap = 26.06J.
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Due to the fragmented nature of American government and narrow special interests, the American tax code, compared to other democracies, is a. More simple than some and more complex than others. b. Surprisingly, about the same. c. Overall, more complex. d. Simple
The correct answer in option C. The American tax code, compared to other democracies, Overall, more complex
What is fragmented nature of American government ?The tale of King Rex, who was motivated to establish an altogether new and improved legal system for his people, was presented in a 1963 lecture by American legal philosopher Lon Fuller. However, King Rex was a dull, uneducated legislator. Every type of law he enacted was met with fervent popular opposition.
The populace argued that his first new legal system was incredibly ambiguous. After that, he published a legal code that was precise but riddled with baffling paradoxes. Modern democratic state residents and corporate entities might identify with King Rex's subjects on some level. These days, we have to pay for expensive legal specialists to advise us on our legal dangers, rights, and obligations because the legal systems we live under are constantly expanding and becoming so deep, sophisticated, and precisely written.
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Identify The Correct Name For Each Acid. HNO2 Choose...Nitric Acidhydrosulfuric Acidsulfuric Acidchloric Acidnitrous Acidperchloric Acid HClO3 Choose...Nitric
The correct name for HNO₂ is Nitrous acid and HClO₃ is known as the Chloric acid. Nitrous acid, often known as HNO₂, is an acidic molecule that is weak and unstable.
It is often cold and only produced in diluted forms. It is a very helpful substance that transforms some amines into diazonium compounds. The first query you might have is, "What is the chemical formula for nitrous acid?" The chemical formula for nitrous acid is HNO₂. 47.013 g/mol is its molar mass. A planar molecule must have single and double bonds connecting the nitrogen and oxygen atoms. These two oxygen molecules have an electronegative polarity.
A colorless liquid is chloric acid. Combustible materials will burn more quickly due to its ability to ignite most things on contact. It corrodes tissue and metals. It is a reagent used in chemical analysis and in the synthesis of other chemicals.
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tryptophan hydrolysis results in
Tryptophanase presence is detected using this method. Indole is produced when tryptophan is broken down by tryptophanase and combined with cinnamaldehyde to form a blue-green molecule.
What byproducts of tryptophan hydrolysis are there?Additionally present in small amounts, tryptophan undergoes substantial acid hydrolysis degradation. However, as there is no detectable by-product, alkaline hydrolysis is often used only for tryptophan analysis.
In the absence of an enzyme, no color is produced (i.e. indole negative). An organism can convert the amino acid tryptophan into pyruvic acid, indole, and ammonia by producing the enzyme tryptophanase.
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glyceraldehyde 3-phosphate dehydrogenase causes ________.
Neither the reduction and phosphorylation of glyceraldehyde 3-phosphate to produce 1,3-bisphosphoglycerate nor the oxidation of a molecule of NAD+ to NADH.
What is G3P and how does it work?
The energy-producing processes glycolysis and glycerolipid biosynthesis both require glycerol-3-phosphate (G3P), which is a necessary component.
Enzymes involved in G3P biosynthesis and catabolism, as well as those involved directly or indirectly in G3P biosynthesis, control the amount of G3P in plants.
What is the purpose of glyceraldehyde 3-phosphate?
The end result of the Calvin cycle is glyceraldehyde 3-phosphate, or G3P. A 3-carbon sugar, it serves as the building block for the creation of other carbs.
The cycle is continued in part by using this G3P to regenerate the RuBP, but some of it is also available for molecular synthesis and is utilized to create fructose diphosphate.
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the scene below represents a mixture of a2 (green) and b2 (blue) before they react to form ab3.
1. The limiting reactant would be [tex]B_2[/tex]
2. The number of molecules of product formed would be 3 moles.
Stoichiometric problemIn the diagram, the green ball is [tex]A_2[/tex] and the blue ball is [tex]B_2[/tex]. Both react to form [tex]AB_3[/tex] according to the following equation:
[tex]A_2 + 2B_3 --- > 2AB_3[/tex]
From the equation, the mole ratio of [tex]A_2[/tex] to [tex]B_3[/tex] is 1:2. There are 6 green balls ([tex]A_2[/tex]) and 3 blue balls ([tex]B_2[/tex]) in the image. In other words, the ratio of [tex]A_2[/tex] to [tex]B_3[/tex] in the image is 2:1.
Thus, [tex]B_2[/tex] is limiting in availability.
From the equation, the mole ratio of [tex]B_2[/tex] to [tex]AB_3[/tex] is 1:1. With 3 moles of [tex]B_2[/tex] limiting the reaction, only 3 moles of [tex]AB_3[/tex] will also be produced going by the mole ratio.
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The complete question:
The molecular scene at right represents a mixture of a2 (green) and b2 (blue) before they react to form ab3. What is the limiting reactant? How many molecules of product can form?
FILL IN THE BLANK. The development of wings on a fly, a moth, and a bird are _____ because they developed independently as adaptations to perform the common function of flying.
The development of wings on a fly, a moth, and a bird are analogous because they developed independently as adaptations to perform the common function of flying.
What are analogous structures?
In evolutionary biology, analogous is defined as "having comparable functions but distinct evolutionary origins." In other words, various species with various evolutionary paths utilize their biological structures for similar ends.
Convergent evolution describes this kind of evolution. This type of evolution involves the development of structures by creatures that serve the same purposes despite having unrelated evolutionary origins. As a result, even though they have different evolutionary or developmental histories, all analogous structures in unrelated species would serve the same purposes. In terms of function or appearance, these structures may mimic certain characteristics.Hence, the development of wings on a fly, a moth, and a bird are analogous because they developed independently as adaptations to perform the common function of flying.
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Oxidation of the carbon farthest from the carbonyl group of a fatty acid is called: A. a oxidationB. b-oxidationC. w-oxidationD. The reaction does not occurE. Either A or B are correct depending on the point of reference
Oxidation of the carbon farthest from the carbonyl group of a fatty acid is called w-oxidation.
What is Oxidation?
When an object comes into touch with oxygen or the other oxidizer, a chemical reaction occurs. Rusty and the brown color of a sliced apples are both evidence of oxidation.
An oxidation reaction takes place when oxygen interacts with a substance or an element. Another way to think of oxidation is as the process of removing hydrogen from the species of reactants. Molecule, atom, or ion oxidation is the process of losing electrons.
Therefore, Option C is correct.
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What is the frequency of green light that has a wavelength of 549 nm? (c = 3.00 x 10⁸ m/s)
Taking into account the definition of wavelength, frecuency and propagation speed, the frequency of green light that has a wavelength of 549 nm is 5.46×10¹⁴ Hz.
WavelengthWavelength is the minimum distance between two successive points on the wave and it is expressed in units of length (m).
FrequencyFrequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).
Propagation speedThe propagation speed is the speed with which the wave propagates in the medium.
The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:
v = f×λ
All electromagnetic waves propagate in a vacuum at a constant speed of 3×10⁸ m/s.
Wavelength of the radiationIn this case, you know:
v=3×10⁸ m/sf= ?λ= 549 nm= 5.49×10⁻⁷ m (being 1×10⁻⁹ nm= 1 m)Replacing in the definition of propagation speed:
3×10⁸ m/s= f× 5.49×10⁻⁷ m
Solving:
f= 3×10⁸ m/s ÷ 5.49×10⁻⁷ m
f= 5.46×10¹⁴ Hz
In summary, the frequency is 5.46×10¹⁴ Hz.
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draw the product(s) formed when alkene a is reacted with ozone, followed by zn and h2o. if no second product is formed, do not draw a structure in the second box.
Ozonolysis, also known as ozonolysis-reduction, is the process of treating an alkene with ozone.
Then reducing it with an appropriate agent in order to disassemble complex compounds with double bonds into simpler, more easily identifiable by-products.It might be possible to determine the structure of the original double-bond-containing substance from the identity of the products formed. When an alkene reacts with ozone, a molozonide is initially created as an unstable, cyclic intermediate.Alkenes can also be broken down by additional oxidizing substances, like potassium permanganate. However, oxidation will proceed more quickly with KMnO₄ than with ozonolysis, so the end products may differ slightly.To know about Ozonolysis,
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Compare and contrast one mole of a compound and Avogadro's number of particles in a compound. What is the conversion factor between the two?
One mole of a compound is a unit of measurement that represents 6.022 x 10^23 particles of a compound. This number is also referred to as Avogadro's number and is the ratio of particles to moles in a given compound.
What is Avogadro's number?
The proportionality factor that connects the number of constituent particles (typically molecules, atoms, or ions) in a sample with amount of substance in that sample is called the Avogadro constant, also known as NA or L. It has an exact value of 6.022140761023 reciprocal moles and serves as a SI defining constant. Stanislao Cannizzaro named it after the Italian scientist Amedeo Avogadro, who explained this number at the Karlsruhe Congress in 1860, four years after Avogadro's passing. The Avogadro number is a dimensionless number that represents the Avogadro constant as a numerical value expressed in reciprocal moles. The Avogadro number, or Nor N0 in older literature, is the exact number of particles (6.022140761023) that make up one mole.
One mole of a compound is a unit of measurement that represents 6.022 x 10^23 particles of a compound.
This number is also referred to as Avogadro's number and is the ratio of particles to moles in a given compound.
The conversion factor between one mole and Avogadro's number of particles is 1:6.022 x 10^23.
This means that for every one mole of a compound, there are 6.022 x 10^23 particles of that compound.
In other words, one mole of a compound is equal to Avogadro's number of particles in that compound.
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Explain the relationship between the colors of light you see and the energy associated with the electron transition, i.e., what does this tell you about the relative distance between the energy levels or orbitals?
Answer:
The color of light that is emitted by an atom depends on how much energy the electron releases as it moves down different energy levels.
Explanation:
Help please????!!!!!!!!!
3/ a. Selenium, Copper, Scandium
b. Oxygen, Sulfur, Polonium
c. Rubidium, Cesium, Francium
4/ a. Arsenic, Germanium, Gallium
b. Beryllium, Calcium, Barium
c. Calcium, Cadmium, Iridium
5/ a. Platinum, Nickel, Copper
b. Silver, Actinium, Phosphorous
c. Tungsten, Astatine, Mercury
Explain: the nuclear charge is shielded by inner closed shells that are complete. The valence electrons are also farther removed from the nuclear core, and thus, even tho the nuclear charge has increased, the attraction for the valence electrons should be DECREASED, and this is manifested by the well-known decrease in ionization enthalpies as we go down a Group, a column of the Periodic Table. And thus down the Group, electronegativity decreases.
Answer:
3. IN ORDER OF HIGHEST TO LOWEST
a. Selenium, Copper, Scandium
b. Oxygen, Sulfur, Polonium
c. Rubidium, Cesium, Francium
4. IN ORDER OF HIGHEST TO LOWEST
a. Arsenic, Germanium, Gallium
b. Beryllium, Calcium, Barium
c. Calcium, Cadmium, Iridium
5. IN ORDER OF LARGEST TO SMALLEST
a. Platinum, Nickel, Copper
b. Actinium, Silver, Phosphorous
c. Tungsten, Mercury, Astatine
Explanation:
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The molar mass of MgBr2 is 184.11 g/mol.
How many moles are in 500 g MgBr2? [ ? ] mol MgBr2
There are 2.716 moles are present in 500 gm of MgBr₂
What is molar mass?The mass of a sample of a chemical compound is divided by the quantity of that substance, or the number of moles in the sample, measured in moles, to obtain the compound's molar mass in chemistry.
MgBr₂ is known as Magnesium bromide.
It is given that, Magnesium bromide of molar mass = 184.11 g/mol
As we know,
184.11 gm Magnesium bromide contains 1 mol
So, 500 gm Magnesium bromide contains 500 ÷ 184.11 = 2.716 mol
Thus, 2.716 moles are present in 500 gm of MgBr₂
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Solutes are returned to the blood during: _________
During tubular reabsorption, solutes are transferred back to the circulation. Glomerular filtration involves the passive transfer of small substances from the blood towards the filtrate.
The location of tubular reabsorptionThe second crucial step in the production of urine is tubular reabsorption. Many of the glomerular filtration of solutes needed for proper bodily operation, like amino acids, glucose, et salts, begins in the proximal section of the tubule.
What are tubular reabsorption and secretion?The reverse of reabsorption, tubular secretion is the movement of substances from peritubular capillaries into the renal tubular lumen. Passive diffusion and active transport are the main causes of this secretion. Usually, only a small number of substances—usually waste products—are excreted.
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determine the rate of reaction, order of the reaction with respect to reactants and value of the rate constant
The rate equation's power-law form is typically employed to identify the reaction order.R = k[A]x[B]y is the formula for this form of a rate law.
What is the overall order of reaction and the order relative to each reactant?Its reaction is m ordering with regard to A & n function with respect to B, according to the general rate law discussed above.For instance, the reaction is first degree in A and second order in B if m = 1 and n = 2.The sum of the orders for each reactant makes up the overall reaction order.
What is the relationship between reaction rate and reaction rate constant?The overall order of reaction will be 0 if the constant has same unit as that of the reaction rate.
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Adipic acid is an organic compound composed of 49.31%C, 43.79%O, and the rest hydrogen. If the molar mass of adipic acid is 146.1 g/mol , what are the empirical and molecular formulas for adipic acid?
Considering the definition of empirical and molecular formula, the empirical formula is C₃H₅O₂ and the molecular formula is C₆H₁₀O₄.
Definition of empirical formulaThe empirical formula or minimal formula is one that indicates the type of atoms that make up a compound, the minimum ratio of the integer number of atoms and not necessarily the exact number of atoms in it.
Definition of molecular formulaThe molecular formula is the actual formula of the molecule and indicates the types of atoms and the number of each type involved in the formation of the molecule.
This formula can be obtained from the empirical or minimal formula, as long as the molecular mass of the compound is known. That is, divide the estimated molecular mass divided by the molecular mass of the empirical form. With the multiple obtained, we proceed to multiply the subscripts of the empirical formula, thus obtaining the molecular formula of the compound.
Empirical formula in this caseIn this case, you know:
Carbon (C): 49.31%Oxygen (O): 43.79%Hydrogen (H): 6.9%Assuming a 100 grams sample, the percentages match the grams in the sample. So you have:
Carbon (C): 49.31 gramsOxygen (O): 43.79 gramsHydrogen (H): 6.9 gramsThen it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:
Carbon (C): 49.31 grams÷ 12 g/mole= 4.109 molesOxygen (O): 43.79 grams÷ 16 g/mole= 2.74 molesHydrogen (H): 6.9 grams÷ 1 g/mole= 6.9 molesThe empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:
Carbon (C): 4.109 moles÷ 2.74 moles= 1.5 Oxygen (O): 2.74 moles÷ 2.74 moles= 1Hydrogen (H): 6.9 moles÷ 2.74 moles= 2.5The empirical formula must be expressed using whole number relationships, so:
Carbon (C): 1.5× 2= 3Oxygen (O): 1× 2= 2Hydrogen (H): 2.5× 2= 5Therefore the C: H: O mole ratio is 3: 5: 2
Finally, the empirical formula is C₃H₅O₂.
Molecular formula in this caseThe molar mass of adipic acid is 146.1 g/mol and the molar mass of empirical formula is 69 g/mole.
Dividing the estimated molecular mass divided by the molecular mass of the empirical form, you get:
146.1 g/mol÷ 69 g/mol ≅ 2
This means that in the molecular formula there are 2 unit formulas, so it is necessary to multiply the number of all atoms by 2:
Molecular formula= 2×C₃H₅O₂
Molecular formula= C₆H₁₀O₄
The molecular formula is C₆H₁₀O₄.
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What is the strongest intermolecular force present for each of the following molecules?
A. hydrogen [tex]\left(\mathrm{H}_2\right)[/tex]
B. carbon monoxide (CO)
C. silicon tetrafluoride [tex]\left(\mathrm{SiF}_4\right)[/tex]
D. nitrogen tribromide [tex]\left(\mathrm{NBr}_3\right)[/tex]
E. water [tex]\left(\mathrm{H}_2 \mathrm{O}\right)[/tex]
Answer: Yes, it is true, hydrogen bonding is strongest intermolecular forces compare with all. In case of nh3, (N-H bonds makes between molecules) and dipole dipole interaction (interaction between two dipole) and london dispersion forces occur between nh3 molecules. this types of intermolecular forces are generated between nh3 molecules.
arrange the following compounds in order of increasing boiling point
The boiling point of the organic compounds above in their increasing order is given below:
PropanePentaneHexaneDecaneWhat is meant by the boiling point of substances?The boiling point of substances simply refers to that temperature at which a compound or substance in its liquid forms starts to boil. However, from the context of the task given above, all the compounds from above belong to the family of organic compounds known as the alkanes.
That being said, the boiling point of the organic alkanes increases with an increasing number of carbon atoms. This is why propane; which has three carbon atoms from above has the lowest boiling. The next compound above with a higher boiling point than propane is pentane which has five carbon atoms. The next one is hexane and finally decane which has the highest boiling point.
In conclusion, we can now confirm from the explanation given above that the number of carbon atoms in alkanes is the key to its boiling point.
Complete question:
Arrange the following compounds in order of increasing boiling point:
Pentane
Propane
Decane
Hexane
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TRUE/FALSE. sn2 mechanism for nucleophilic substitution reactions involves one step and occurs with inversion of configuration.
The Sn2 mechanism for nucleophilic substitution reactions only requires one step and takes place when the configuration is inverted. - True
What is the SN2 reaction's mechanism?
Reaction Mechanism for SN2
Through a transition state, the carbon-nucleophile bond forms and the carbon-leaving group bond dissolves simultaneously. As a result of the leaving group being forced out of the transition state on the other side of the carbon-nucleophile link, the necessary product is now formed.
Explain the SN1 and SN2 mechanisms with an example.
This reaction is hence referred to as a substitution nucleophilic bimolecular reaction. In this reaction, the halogen departs the group as the nucleophile attacks the positively charged carbon. One step makes up the reaction. Carbocation production and halogen evaporation occur simultaneously.
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Two boys, Adam and Bob are pushing a box. They want to move the box to the right. Adam exerts a force of 100 Newtons on the box and Bob exerts a force of 150 Newtons in the same direction.
A. Are the forces working in the same or opposite direction? ___________________
B. Do you add or subtract the forces? ____________________________________
C. What is the combined force (net force) on the box? ________________________
D. Are the forces balanced or unbalanced? ________________________________
A. The forces are working in the same direction.
B. The forces are additive.
C. The combined force on the box is 250 Newtons.
D. The forces are unbalanced.
Net forceThe net force on an object is the resultant force on the object when all the possible forces have been considered.
Forces that act in the same direction are additive in nature while opposing forces are subtractive.
Thus, considering the forces exerted by Adam and Bob on the box, their forces are additive because both are in the same direction. Thus, the total force applied or the combined force on the box can be calculated as;
100 + 150 = 250 Newtons.
Now, the two forces are not applied at the same point on the box and neither are they equal in magnitudes. Bob exerted more force than Adam. Thus, the forces are unbalanced.
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the fact that there is a high sulfur content in the coal burned in south african power plants means that the
The fact that the coal burned in South African power plants has a high Sulphur content means that the power plants: burn cleanly, with little pollution
The fact that the coal burned in South African power plants has a high Sulphur content means that the power plants: burn cleanly, with little pollution; emit high levels of radioactive pollution; are very expensive, causing the majority of the country's poor to go without electricity; contribute to acidic deposition; and are very affordable, enhancing the country's economy.
What is released during the burning of sulfur-rich coal?
Some or all of the SO2 produced when high Sulphur coal is burned in power plants is frequently discharged into the atmosphere, where it reacts with water vapour to form sulfuric acid. Acid rain is then produced when this acid reacts with water droplets.
When coal is burned, what is released in significant amounts?
All living things, including humans, are composed of carbon. However, as coal burns, its carbon reacts with airborne oxygen to generate carbon dioxide. Although carbon dioxide (CO2) is an odourless, colourless gas, it is one of numerous gases in the atmosphere that can retain the heat from the planet.
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ethanol is used in the dna isolation process because
Ethanol is used in the dna isolation process because it allows the precipitate to form.
What is ethanol?Ethanol is defined as the organic chemical compound that contains the elements such as hydrogen, carbon and hydroxide and it's often referred to as alcohol.
Examples of uses of ethanol in the medical section include the following:
It is used as a topical agent to prevent skin infections, in pharmaceutical preparations (e.g. rubbing compounds, lotions, tonics, colognes), cosmetics, and in perfumes.In the molecular laboratory, ethanol can be used for the extraction of DNA during dna isolation process.This is suitable because addition of ethanol, followed by centrifugation, will cause the DNA proteins to come out of the solution the requires DNA extraction.
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the hydrolysis of sucrose is represented by the chemical equation above. this reaction is extremely slow in aqueous solution
The hydrolysis of sucrose is extremely slow in an aqueous solution that can be increased by catalysts.
The sucrase-sucrose complex is produced as an intermediate in a separate reaction pathway with a lower activation energy through which the process progresses.
By offering a new reaction pathway with lower activation energy, catalysts can speed up a reaction. The diagram is consistent with a two-step mechanism in which the sucrase-sucrose complex is created in the first stage as an intermediate and depleted in the second.
An equimolar mixture of fructose and glucose is produced during the hydrolysis of sucrose, which is known as inverted sugar in the food industry.
Inversion is the process of hydrolyzing sucrose to produce glucose and fructose. Invert sugar is the result of the hydrolysis of sucrose, which causes the sign of rotation to shift from dextro (+) to laevo (-).
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