why do you think polar aprotic solvents increase the rate of an sn2 reaction

If I contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400 K,The pressure inside the container is approximately 16.42 atm.

Using the Ideal Gas Law, we can calculate the pressure inside the container. The Ideal Gas Law is expressed as PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

In this case, you have 3 moles of gas (n = 3), a volume of 60 liters (V = 60 L), and a temperature of 400 K (T = 400 K). The gas constant (R) for this equation is 8.314 J/(mol·K), but since we are using liters and atm, we need to use the value 0.0821 L·atm/(mol· K).

Now, we can plug the values into the equation:

P × 60 L = 3 mol × 0.0821 L·atm/(mol·K) × 400 K

To find the pressure (P), we will rearrange the equation and solve for P:

P = (3 mol × 0.0821 L·atm/(mol·K) × 400 K) / 60 L

P ≈ 16.42 atm

So, the pressure inside the container is approximately 16.42 atm.

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1. 76.69 • 10^12

2. 0.69 • 10^5

Scientific notation is used by scientists and mathematicians when numbers are too small or large to be written out in full.

Correct Scientific Notation

When writing a number in scientific notation, there are 2 steps. First, move the decimal point in the number so that there is exactly one natural number before the decimal.

This means that the number must be between 1 and 10 to be in scientific notation.

Next, multiply the new decimal by 10 raised to some power. The power should be equivalent to the number of times the decimal point was moved. If the decimal point was moved to the left (the original number was large), then the power should be positive. If the decimal was moved the to right (the original number was small), then the power should be negative.

Incorrect Scientific Notation

If the steps above are not done correctly, the answer will not be in scientific notation. For this question, only the first step is important. Answer choice 1 has 2 natural numbers before the decimal point, so it is incorrect.

Answer choice 2 has no natural numbers before the decimal point so it is also incorrect.

Neither answer choice is between 1 and 10.

Examples

We can look at 2 examples of correct scientific notation.

First, move the decimal 7 places to the right.

Now, multiply it by 10 to the 7th power because the decimal was moved 7 times. Also, 7 should be negative because the decimal was moved to the right.

Additionally, we look at an example with a larger number

Once again, move the decimal point 7 places to the left

Finally, multiply it by 10 to the 7th power, but it should be positive this time.

Answer:

-205.7 kJ

Explanation:

if ur a connexus kid i just took this too lol

Answer:

A (-205.7)

Explanation:

Owing to the electronic configuration of metals ,metallic bonding exists in metals because of which when light is pointed at them they become shiny.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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The positive charge on the N atom in triethylammonium chloride is more polar than the uncharged N atom in triethylamine which is responsible for it being more soluble in water.

This is defined as the amount of solutes which is dissolved in a solvent such as water and is based on different factors such as temperature, surface area etc.

The positive charge on the N atom in triethylammonium chloride is more polar than the uncharged N atom in triethylamine which makes it more polar thereby increasing its interactions with water.

This leads to an increased solubility and is therefore the most appropriate choice.

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The byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

In acid catalysis and base catalysis, a chemical reactiοn is catalyzed by an acid οr a base. By Brønsted–Lοwry acid–base theοry, the acid is the prοtοn (hydrοgen iοn, H+) dοnοr and the base is the prοtοn acceptοr. Typical reactiοns catalyzed by prοtοn transfer are esterificatiοns and aldοl reactiοns.

The acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate can lead tο variοus by prοducts depending οn the reactiοn cοnditiοns and specific chemical pathways. Hοwever, withοut mοre detailed infοrmatiοn οr a specific reactiοn mechanism, it is difficult tο prοvide a cοmprehensive list οf the by prοducts that may fοrm.

Based οn the infοrmatiοn prοvided, the acid-catalysed hydrοlysis οf diethyl acetamidοbenzylmalοnate delivers the desired (+)-phenylalanine hydrοchlοride prοduct and the fοllοwing byprοduct(s):

E. Bοth A and C: Acetic acid and ethanοl.

The hydrοlysis οf diethyl acetamidοbenzylmalοnate invοlves the cleavage οf ester bοnds, resulting in the fοrmatiοn οf acetic acid as a byprοduct. Additiοnally, since diethyl acetamidοbenzylmalοnate is an ester, hydrοlysis οf the ester bοnds can alsο prοduce ethanοl as anοther byprοduct.

Therefοre, the byprοducts in this reactiοn are acetic acid (οptiοn A) and ethanοl (οptiοn C).

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Complete Question :

Option B: voluntary muscles are the muscles which have complete control and are responsible for all kinds of movements.

Animals' muscles are the types of tissue that cause movement or motion. Voluntary refers to action taken of one's own free will or will. All of the muscles that are linked to the skeleton are voluntary muscles, hence these muscles are also referred to as skeletal muscles or striated muscles because of the way their muscle fibres give them a striated, or stripy, appearance. This, therefore, tells us that option B is he right choice.

The only muscles that can be actively manipulated are those in the skeleton. Since the muscles are connected to the bones, pulling on them moves the bones. Skeletal muscles are used for every conscious movement a person makes.

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Answer:

Star 1 and two. Good on exams I'm doing mine two

Answer:star 1 and 2

Explanation:

"In this discussion, we will explore various chemical structures and their properties. From molecular geometries and polarities to electron domain arrangements, we will delve into the fascinating world of chemical bonding."

A) Let's analyze the molecules you provided and determine their electron domain geometry, molecular geometry, and molecular polarity.

a. BeCl₂:

The Lewis dot structure for BeCl₂ is:

Be: Cl - Be - Cl

Electron domain geometry: Linear

Molecular geometry: Linear

BeCl₂ does not have polar bonds because beryllium (Be) and chlorine (Cl) have similar electronegativities, resulting in a symmetrical distribution of charge. Therefore, BeCl₂ is a nonpolar molecule.

b. XeF₂:

The Lewis dot structure for XeF₂ is:

F-Xe-F

Electron domain geometry: Linear

Molecular geometry: Linear

XeF₂ does not have polar bonds because xenon (Xe) and fluorine (F) have similar electronegativities, resulting in a symmetrical distribution of charge. Therefore, XeF₂ is a nonpolar molecule.

c. SCl₂:

The Lewis dot structure for SCl₂ is:

Cl-S-Cl

Electron domain geometry: Trigonal planar

Molecular geometry: Bent or V-shaped

SCl₂ has polar bonds because sulfur (S) is less electronegative than chlorine (Cl), resulting in a partial positive charge on sulfur and partial negative charges on the chlorine atoms. The bond dipole moments point towards the chlorine atoms. Therefore, SCl₂ is a polar molecule.

B) Now let's determine the molecular geometry, hybridization, and bond angle for the given molecules and ions:

a. N₃⁻:

The Lewis dot structure for N₃⁻ is:

N≡N-N

Molecular geometry: Linear

Hybridization: sp

Bond angle: 180°

b. NO₃⁻:

The Lewis dot structure for NO₃⁻ is:

O

||

O - N ≡ O

||

O

Molecular geometry: Trigonal planar

Hybridization: sp²

Bond angle: ~120°

c. BF₄⁻:

The Lewis dot structure for BF₄⁻ is:

F F

\ /

B

/ \

F F

Molecular geometry: Tetrahedral

Hybridization: sp³

Bond angle: ~109.5°

d. CH₄:

The Lewis dot structure for CH₄ is:

H   H

\ /

 C

/ \

H   H

Molecular geometry: Tetrahedral

Hybridization: sp³

Bond angle: ~109.5°

e. C₂H₂:

The Lewis dot structure for C₂H₂ is:

H

|

C ≡ C

|

H

Molecular geometry: Linear

Hybridization: sp

Bond angle: 180°

Please note that molecular polarity is not determined for ions (N₃⁻, NO₃⁻, BF₄⁻) as they have an overall charge and are not individual molecules.

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Complete question

A) Use the Lewis dot structure to predict the electron domain geometry and molecular geometry for the following molecules or ions. Determine the molecular polarity by showing the bond dipole moment if the molecules have polar bonds and the direction of the net dipole if any.

a. BeCl₂

b. XeF₂

c. SCl₂

B) Using the Lewis dot structure, predict the molecular geometry of the following and state the hybridization and bond angle of the central atom.

a. N₃⁻

b. NO₃⁻

c. BF₄⁻

d. CH₄

e. C₂H₂

The percent composition of calcium acetate is 29.89% calcium, 17.92% carbon, 4.52% hydrogen, and 47.67% oxygen.

To calculate the percent composition of calcium acetate (Ca(C2H3O2)2), you need to determine the total atomic mass of each element in the compound and divide it by the molar mass of the entire compound.
The atomic mass of calcium (Ca) is 40.08 g/mol, the atomic mass of carbon (C) is 12.01 g/mol, the atomic mass of hydrogen (H) is 1.01 g/mol, and the atomic mass of oxygen (O) is 16.00 g/mol. The molar mass of calcium acetate is:
1 Ca atom x 40.08 g/mol = 40.08 g/mol Ca
2 C atoms x 12.01 g/mol = 24.02 g/mol C
6 H atoms x 1.01 g/mol = 6.06 g/mol H
4 O atoms x 16.00 g/mol = 64.00 g/mol O
Total molar mass = 134.16 g/mol
To calculate the percent composition of each element:
% Ca = (40.08 g/mol Ca / 134.16 g/mol) x 100% = 29.89%
% C = (24.02 g/mol C / 134.16 g/mol) x 100% = 17.92%
% H = (6.06 g/mol H / 134.16 g/mol) x 100% = 4.52%
% O = (64.00 g/mol O / 134.16 g/mol) x 100% = 47.67%
Therefore, the percent composition of calcium acetate is 29.89% calcium, 17.92% carbon, 4.52% hydrogen, and 47.67% oxygen.

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Answer:

the correct answer is argon: 1s 2^2s 2^2p 6^3s 2^3p^6​

Explanation:

Answer: 8 electrons

Explanation:

Answer: 8 valence electrons

Explanation: This is because the maximum electron an energy level can hold is 8 making it a stable atom

Answer:

a. 0.02 moles  of NH₃, 0 moles of O₂, 0.08 moles of NO, 0.12 moles of H₂O

b. \(P_{NH_3}\) = 12,576.5 Pa, \(P_{NO}\) = 50,306.05 Pa, \(P_{H_2O}\) =  74,459.1 Pa

c. The total pressure is 138,341.64 Pa

Explanation:

a. NH₃ + O₂  → NO + H₂O

The balanced chemical equation is first found to be

4NH₃ + 5O₂  → 4NO + 6H₂O

Therefore, we have;

4 moles of NH₃ reacts with 5 moles of O₂ to form 4 moles of NO and 6 moles H₂O

Dividing by the reactant with the highest number of moles which is 5 moles of oxygen gives;

4/5 moles  of NH₃ reacts with 5/5 moles of O₂ to form 4/5 moles of NO and 6/5 moles H₂O

Which is the same as 4/5 moles  of NH₃ reacts with 1 mole of O₂ to form 4/5 moles of NO and 6/5 moles H₂O

Multiplying by 0.100 gives;

0.1×4/5 moles  of NH₃ reacts with 0.1 mole of O₂ to form 0.1×4/5 moles of NO and 0.1×6/5 moles H₂O

The quantity of each gas in the container upon completion of the reaction is therefore;

(0.1 - 0.1×4/5) = 0.02 moles  of NH₃

0 moles of O₂

0.08 moles of NO

0.12 moles H₂O

b. Given that the temperature = 105°C, we have;

PV = nRT

P = nRT/V

Where:

n = Total number of moles = 0.02 + 0.08 + 0.12 = 0.22 moles

R = Universal gas constant = 8.3145 J/(mol·K)

T = Temperature = 105°C = 378.15 K

V = Volume = 5 litre = 0.005 m³

P = 0.22×8.3145×378.15/0.005 = 138,341.64 Pa

From Dalton's law of partial pressure, we have;

Partial pressure Pₓ = Xₓ × P

Where:

Xₓ = Mole fraction

Which gives for ammonia NH₃ with 0.02 moles;

Mole fraction = 0.02/0.22 = 1/11

\(P_{NH_3}\) = 1/11 × 138,341.64  = 12,576.5 Pa

For the 0.08 moles of NO, we have

Mole fraction = 0.08/0.22 = 4/11

\(P_{NO}\) = 4/11 × 138,341.64  = 50,306.05 Pa

For the 0.12 moles H₂O

P = 0.12×8.3145×378.15/0.005 = 74,459.1 Pa

Mole fraction = 0.12/0.22 = 6/11

\(P_{H_2O}\) = 6/11 × 138,341.64  = 74,459.1 Pa

c. The total pressure = 12,576.5 Pa + 50,306.05 Pa + 74,459.1 Pa = 138,341.64 Pa.

Taking into account the reaction stoichiometry, P₄ will be the limiting reagent.

In first place, the balanced reaction is:

8 P₄ + 3 S₈ → 8 P₄S₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 3 moles of S₈ reacts with 8 moles of P₄, 4 moles of S₈ reacts with how many moles of P₄?

\(moles of P_{4} =\frac{4 moles of S_{8} x8 moles of P_{4} }{3 moles of S_{8}}\)

moles of P₄= 10.667 moles

But 10.667 moles of P₄ are not available, 4 moles are available. Since you have less amount of moles than you need to react with 4 moles of S₈, P₄ will be the limiting reagent.

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A solid produced by a chemical reaction in solution that separates from the solution is called Precipitate.

Precipitate: a solid that forms from a chemical reaction taking place in solution and separates from the solution.

a solid created when a solution undergoes a change, frequently as a result of a chemical reaction or temperature shift that makes a solid less soluble. A precipitate in meteorology is either liquid or solid water (rain, snow, etc.)

The clear liquid remaining above the precipitated or the centrifuged solid phase is also called the 'Supernate' or 'Supernatant'.

Therefore, the chemical reaction in solution that separates from the solution is called precipitate.

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Answer:

Because they have variable oxidation states

Explanation:

Transition metals are designated with roman numerals because they have variable oxidation states.

They do not form a single ionic ion as seen by the main group elements.

Answer:

short answers:

A learned behavior is a behavior that develops during an animal’s lifetime.

Examples of learned behaviors include tying one’s shoes or solving a math problem.

An inherited behavior is a behavior that an animal is born with.

An example of an inherited behavior is a bird building a nest.

Explanation:

Learned behaviors are those which are gradually developing in us through learning at different ages and it takes time. Inherited behaviour is innate to us which are incorporated with us by birth.

An organism develops a learned behavior as a result of experience. In contrast to learned actions, inherent behaviors are genetically preprogrammed and can be carried out without any prior knowledge or instruction.  

Certain behaviors have features that are both acquired and innate. Zebra finches, for instance, have a genetic predisposition to learn a song, but the song they sing is influenced by what they hear from their dads.

Inherited behaviors are inherited from parents to their offsprings. Such as  similar nature in sound, angriness, some diseases etc. They are not gathered from any experience and are accompanied by birth.

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Phenol and bromomethane are the major products obtained upon treatment of methyl phenyl ether with excess HBr.

What do you mean by Phenol and Bromomethane?

Phenols  are a class of chemical compounds which consist of a hydroxyl group (—OH) bonded directly to an aromatic hydrocarbon group. The simplest of the class is phenol, C6H5OH. Friedlieb Ferdinand Runge discovered Phenol in the year 1834. It was extracted from coal tar.

Bromomethane, commonly known as methyl bromide, is an organobromine compound with formula CH3Br. It is a colorless, odorless, nonflammable gas which is produced both industrially and biologically.  It consist of a  a tetrahedral shape and is  recognized as a ozone-depleting chemical.

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Separation involves dividing a mixture into its components, while purification removes impurities to obtain a pure substance. Purity can be determined through analytical techniques. Additional purification techniques may be employed if needed.

In liquid-liquid extraction, separation occurs by exploiting differences in solubility between the components in two immiscible solvents. Separation focuses on dividing a mixture into its individual components, while purification aims to remove impurities to obtain a single, pure substance.

To determine if the separated compounds are pure, you can use analytical techniques such as chromatography, melting point analysis, or spectroscopy. If the compounds are found to be impure, additional purification techniques can be applied, such as recrystallization, distillation, or chromatography, depending on the nature of the impurities and the physical and chemical properties of the compounds in question.

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Given the symbol Cl-37, the element is Cl, but there is no information about its charge. When this is like that, it is implicit it is an atom, that is, it is neutral, its charge is 0.

The number indicates is the mass number, so its mass is 37.

So, mass is 37 and charge is 0.

Answer:

PLEASE MARK ME AS THE BRAINLIEST

Explanation:

According to the 2n2 rule, the maximum number of electrons in the third period = 2 x (3)2 = 18. But, the last shell cannot accommodate more than 8 electrons so, the number of electrons in third period is 8. Hence, the number of elements is also 8.

Answer: c

Explanation:

I can give you some general information about acid deposition and its effects Acid deposition refers to the deposition of acidic substances from the atmosphere onto the Earth's surface, including land, water bodies.

and buildings. This can happen through precipitation such as rain, snow, and fog, as well as dry deposition through the deposition of acidic gases and particles. The effects of acid deposition can include damage to forests, crops, and other vegetation, as well as damage to buildings and infrastructure. It can also lead to acidification of lakes and streams, which can harm aquatic life.

Acid deposition refers to the process where acidic particles or gases are deposited on Earth's surface through rain, snow, fog, or dry particles. This occurs when sulfur dioxide (SO2) and nitrogen oxides (NOx) are released into the atmosphere, primarily from burning fossil fuels. They react with water, oxygen, and other chemicals to form acidic compounds that fall to the ground.

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According to the solving the density of the marble is:

D = 2.5 g/cm^3

The amount of mass that a substance has per unit volume is known as its density. If two materials occupy the same volume, the one with a higher density would weigh more than the one with a lower density.

Utilizing the density formula is another approach to determining an object's weight-to-volume ratio. Since you only need to perform one operation to find it, the computation is not too difficult.

The density formula is as follows:

D = m / v,

where:

D - density;

m - mass; and

v - volume.

m - 5grams

v - 2cm

D -

Putting the value in the formula we get:

D = 5/ 2,

D = 2.5 g/cm^3

According to the solving the density of the marble is:

D = 2.5 g/cm^3

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Answer: It is possible that the seller's claims about the bone being a genuine dinosaur bone and being 400 million years old are true. However, without additional evidence or verification from independent scientists, it is also possible that the bone is not authentic or that the carbon dating results have been manipulated or misinterpreted. It is important to be skeptical and to conduct further research before making a decision about the authenticity of the bone. Additionally, it is important to consider the source of the bone and the seller's reputation and credentials. It would be wise to seek out additional opinions from experts in the field before making a decision about the authenticity of the bone.

The equation relating standard cell potential (E°cell) and the equilibrium constant (K) when plugging in values for temperature (T), Faraday's constant (F), and the ideal gas constant (R) is: E°cell = (RT / nF) * ln(K).

The Nernst equation relates the standard cell potential (E°cell) of an electrochemical cell to the equilibrium constant (K) of the corresponding redox reaction. When considering the effect of temperature, the equation becomes: Ecell = E°cell - (RT / nF) * ln(Q), where R is the ideal gas constant, T is the temperature in Kelvin, n is the number of electrons transferred in the balanced redox equation, F is Faraday's constant, and Q represents the reaction quotient.

In the case mentioned, we are plugging in the values for temperature (298.15 K), Faraday's constant (F), and assuming room temperature. By assuming the reaction is at equilibrium, the reaction quotient Q equals the equilibrium constant K. Therefore, the equation simplifies to E°cell = (RT / nF) * ln(K).

By using this equation, we can relate the standard cell potential (E°cell) to the equilibrium constant (K) for a given redox reaction at a specific temperature.

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Answer:

b. 0.50 moles

Explanation:

To solve this problem we use Avogadro's number (6.023x10²³ atoms/mol).

By dividing the number of atoms (or molecules) by that number, we can calculate how many moles they represent.

So the answer is option b. 0.50 moles.

Answer: B disposed of according to your instructor's

directions. :)

Answer:

B. disposed of according to your instructor's  directions.

Explanation:

After completing an experiment all chemical waste should be disposed of according to your instructor's directions.

Chemical wastes should be carefully handled in the laboratory so as not to carelessly release them into the environment. If not properly treated and they are discharged into the environment, they can lead to serious hazards and even pollution. Contamination is another very serious problem attributed to disposing chemical waste carelessly.

Instructor's guides should be followed to dispose chemical wastes.

Answer:

Explanation:

Isotope notation is of the form

A

Z

X

where  

Z

is the atomic number (number of protons),  

A

is the mass number (sum of protons and neutrons), and   X   is the element.

In Carbon- 14 ,   14  is the mass number (sum of protons and neutrons). This is our  A .

Carbon has the atomic symbol   C , and it has  6 protons. This is the atomic number, or  A . Thus, the isotope notation for Carbon- 14  is  14  6  C

Hope this helps!

Explanation: