Calculate the ratio [PbT-]/[HT-2] for NTA in equilibrium with PbCO3 in a medium having [HCO3-] = 3.00 x 10^-3 M.

Answers

Answer 1

To calculate the ratio [PbT-]/[HT-2] for NTA in equilibrium with PbCO3 in a medium having [HCO3-] = 3.00 x 10^-3 M, we need to use the equilibrium constant (K) expression for the reaction.

To calculate the ratio [PbT-]/[HT-2] for NTA in equilibrium with PbCO3 in a medium having [HCO3-] = 3.00 x 10^-3 M, we first need to write the balanced chemical equation for the reaction:
PbCO3(s) + NTA + 2HCO3- ↔ PbT- + HT-2 + 3CO2(g) + 2H2O
Next, we need to write the equilibrium expression for the reaction:
K = ([PbT-][HT-2])/([NTA][HCO3-]^2)
Since we are given [HCO3-] = 3.00 x 10^-3 M, we can substitute this value into the equilibrium expression:
K = ([PbT-][HT-2])/([NTA](3.00 x 10^-3)^2)
Finally, we can solve for the ratio [PbT-]/[HT-2] by rearranging the equilibrium expression:
[PbT-]/[HT-2] = ([NTA](3.00 x 10^-3)^2)/[PbT-][HT-2]
We cannot provide a specific value for the ratio [PbT-]/[HT-2] without knowing the values of [NTA], [PbT-], and [HT-2]. However, using the above equation and the given values, you can calculate the ratio.

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Related Questions

Once ____________ bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the ____________ structure known as a(n) ____________ .

Answers

Once hydrogen bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the secondary structure known as a(n) alpha helix.

What is Amino Acid ?

Amino acids are organic compound. Amino acids contains amine and carboxyl functional group. Amino acids is the building block of life these are the molecules that combine to form proteins.

What is Polypeptide Chain ?

A unique sequence of amino acids joined by peptide bonds is called polypeptide.

Thus from the above conclusion we can say that Once hydrogen bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the secondary structure known as a(n) alpha helix.

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Which is not considered part of the solar system?

Jovian planets

galaxies

terrestrial planets

sun

Answers

Galaxies is not the part of the Solar system.

Hence, Option B is correct answer.

What is Solar System ?

Solar System is made up of all the planets that revolve around our Sun. Solar System contains eight planets. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Now lets check all options one by one

Option (A): Jovian Planets

Outer planets are called Jovian planets. These planets are Jupiter, Saturn, Uranus and Neptune. So Jovian Planets are part of the Solar System.

Hence, Option A is incorrect.

Option (B): Galaxies

Galaxy has a black hole at its center. It is a huge collection of dust, billions of star and gas. So galaxies are not a part of the Solar system.

Hence, Option B is incorrect.

Option (C): Terrestrial Planets

Innermost planets in solar system are Terrestrial planets. These planets are Mercury, Venus, Earth and Mars. So Terrestrial planets are part of the Solar system.

Hence, Option C is incorrect.

Option (D): Sun

The Sun is the part of the Solar system as it is the only star in our Solar system. Sun is the center of our Solar system.

Hence, Option D is incorrect.

Thus from the above conclusion we can say that Galaxies is not the part of the Solar system.

Hence, Option B is correct answer.

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_____ was the first expert system developed to determine the chemical structure of molecules.

Answers

Answer:

Dendral was the first expert system developed to determine the chemical structure of molecules.

Two liquids are in a graduated cylinder - liquid a has a density of 1.004 g/cm3 and liquid b has a density of 0.6223 g/cm3 . assuming that they do not mix, which liquid is on top and which liquid is on bottom? where would you expect to find the plastic cube from question #2 if it is dropped into the graduated cylinder with these two liquids?

Answers

Liquid B is expected to be at the top while liquid A is found at the bottom.

What is density?

The term density has to do with the ratio of the mass of a substance to its volume. Now given that the density of a substance actually shows how much heavy the substance is, it is not difficult to understand that a material that has a low density will flat at the top of a material that has a lower density.

Here we are told that the two liquids do not mix. If they do not mix then it follows that they must have formed a two phase system in which one is at the top of the other. The one that is at the top must have the lower density.

Thus, liquid B is expected to be at the top while liquid A is found at the bottom. From the density of the plastic cue, the cube will be at the top.

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Explain why the production of a gas in this experiment is or is not different from the formation of water vapor in the heating curve experiment.

Answers

The production of a gas is different because unlike the heating curve, there was no heat applied to this experiment, and the experiment was a chemical reaction.

What is a Heating curve?

This shows the relationship between the temperature of the heating system and the air temperature in the outer environment.

The chemical reaction emitted heat as against the other which involved heat application which is why water formation in this curve was different.

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As a reaction proceeds toward equilibrium from reactants to products (i.e., from left to right as written), the value of Q is

Answers

As a reaction proceeds toward equilibrium from reactants to products, the value of Q is Increasing

Equilibrium can exist in chemical processes (the products and reactants are produced at the same rate). In a reversible chemical reaction, chemical equilibrium is the state in which there is no net change in the quantity of reactants or products. When a chemical reaction is reversible, the products react with the original reactants as soon as they are created.

There is no net change in the quantity of the chemicals involved when the two opposing reactions are in equilibrium because they are occurring at identical rates, or velocities. At this point, the reaction may be deemed to be finished, meaning that the maximum amount of reactants to products has been converted under the given reaction conditions.

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Place the items in order from lowest to highest degree of internal organization

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The order of internal organization from lowest to highest degree is; cell <  tissue < organ < organ system

What is the order of organization?

The complexity of the parts that compose an organism lays the bedrock for the classification of life. Some organisms are composed only of one cell while others are composed of many complex systems.

The order of internal organization from lowest to highest degree is; cell <  tissue < organ < organ system

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Missing parts:

Place the items in order from lowest to highest degree of internal organization.

1.organ system

2.tissue

3.cell

4.organ

What is the coefficient for oh−(aq) when s2−(aq) no3−(aq) → s(s) no(g) is balanced in basic aqueous solution?

Answers

From the balanced redox equation of the reaction, the coefficient of OH⁻ is 8.

What is the balanced redox equation of the reaction?

A redox equation is the equation of a redox reaction in which oxidation and reduction occurs simultaneously.

The given redox reaction takes place in a basic solution

The balanced redox equation of the reaction is given below:

4 H₂O(l) + 3 S²⁻(aq) + 2 NO₃⁻(aq) ---> 3 S(s) + 2 NO + 8 OH⁻(aq)

In conclusion, a redox equation is balanced when oxidation and reduction occur to the same extent.

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What do you think the elements that are in the same group or period on the periodic table have in common?

Answers

chemical properties and same number of shell

Explanation:

elements in the same group have the same number of eletrons in their outermost shell and hence have the same chemical properties

The function of the heat exchanger in a nuclear reactor is to...
Select one:
a. prevent the leakage of radiation into the environment.
b. convert water into steam, which turns a turbine.
c. cool the reactor water.
d. absorb neutrons to slow down the chain reaction.

Answers

Answer:

cool the tractor water system

What kind of defect or dislocation does a carbon in a ti metal lattice represent?

Answers

electrical conductivity is the kind of defect or dislocation a carbon in a ti metal lattice represents.

The electrical conductivity of a metal is the result of the movement of charged particles. Atoms of metal elements are electrons in the outer shell of the atom and are characterized by the presence of valence electrons that can move freely around

Staircase dislocations and Lomer-Cottrell dislocations are examples of fixed dislocations. The two main types of movable dislocations are blade dislocations and spiral dislocations. The blade dislocations can be visualized as being caused by the termination of the atomic plane at the center of the crystal.

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In an ionic lattice:
A. atoms are packed together in a regular cubic arrangement
B. atoms are bonded with 2 single bonds and one double bond.
C. atoms are structured in a vast network of atoms.
D. atoms are bonded to four others in a tetrahedral shape.

Answers

In an ionic lattice, atoms are packed together in a regular cubic arrangement; option A.

What is an ionic compound?

An ionic compound is a compound which is composed of oppositely-charged ions which are held together by strong electrostatic forces of attraction.

The properties of ionic compound include:

They occur in regular crystal latticesThey have high melting and boiling pointsThey are electrolytes.

Ionic lattices have regular structural patterns consisting of atoms arranged in a regular repeating pattern, usually a cube. There are several cubic structures in ionic lattices.

In conclusion, ionic lattices are regular repeating arrangement of atoms. Ionic lattices are usually arranged in the form of cubic crystal.

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pls help!! I need the answer to this ASAP

Answers

Answer:

I think the element is carbon and the atomic mass is 12.011

15. What is the mass of mercury in a 250 g fish if the ppm was measured to be 0.23?

Answers

Answer: The mass of mercury will be 57.5 micrograms.

The given question deals with Analytical Chemistry where Concentration is asked here.

Concentration: Generally concentration is defined as amount of the substance per unit volume. Concentration is also expressed in parts per million(ppm) when it is a small quantity as in case of mercury content in fish.

Explanation:   Given mass of the fish = 250 g,

                         ppm = 0.23

               Now mass of mercury = 0.23 ppm × 250 g                                                        

                                                     = 0.23/1,000,000 × 250g

                                                    =0.23×250/1,000,000 g

                                                    = 0.0000575 g

                                                    =57.5 micrograms

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Complete the charge balance equation for an aqueous solution of h2co3 that ionizes to hco−3 and co2−3.

Answers

The relevant coefficients for each species on the right side of the equation in order to balance the charges.

We can add a coefficient of 2 to HCO³⁻ and a coefficient of 1 to CO3- because the charges must cancel out: H₂CO₃ ⇌ 2HCO³⁻ + CO₃²⁻-

The charges balance is now: No initial charge

Charge total: 2(-1) + (-2) = -4

Due to the balance of the charges, the charge balance equation is as follows: H₂CO₃ ⇌ 2HCO³⁻- + CO₃²⁻.

,Thus, The charge balance equation is as follows: H₂CO₃ ⇌ 2HCO³⁻- + CO₃²⁻.

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Nylon, a polyamide, is produced from hexanediamine and a substance, x. This substance, x, is most probably:____.
a. an amine.
b. a carboxylic acid.
c. a nitrile.
d. an alcohol.

Answers

Nylon, a polyamide, is produced from hexanedi-amine and a substance, x. This substance, x, is most probably a carboxylic acid.

A polymer containing repeating units connected by amide bonds being called a polyamide. Both naturally occurring and synthetic polyamides are found. Proteins found in materials like wool and silk were examples of naturally produced polyamides.

The term "nylon" refers to a family of polymeric materials made up of polyamides. Nylon would be a silk-like thermoplastic that may be formed into threads, films, or other shapes. It is often manufactured from petroleum.

Therefore, Nylon, a polyamide, is produced from hexanedi-amine and a substance, x. This substance, x, is most probably a carboxylic acid.

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A radioisotope decays, producing an alpha particle and th-234. the original radioisotope must have been an atom of?

Answers

If the product of the process is Th-234, the we now know that the original atom must be U-238.

What is an alpha decay?

An alpha decay is said to occur when there is the loss of an alpha particle from an atom. Now we know that  when there is a loss of an alpha particle, the mass number is decreased by 4 four units while the atomic number is decreased by two units.

If the product of the process is Th-234, the we now know that the original atom must be U-238. It is found two places after the thorium atom in the periodic table.

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A sample of hydrogen gas collected at a pressure of 0.923 atm and a
temperature of 17.0 °C is found to occupy a volume of 29.6 liters. How many
moles of H₂ gas are in the sample?
mol

Answers

Answer:

1.15 moles H₂

Explanation:

To find the moles of H₂ gas, you need to use the Ideal Gas Law equation. The equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.08206 L*atm/mol*K)

-----> T = temperature (K)

Before you can plug the given values into the equation and simplify, you need to convert Celsius to Kelvin.

P = 0.923 atm                     R = 0.08206 L*atm/mol*K

V = 29.6 L                           T = 17.0 °C + 273.15 = 290.15 K

n = ? moles

PV = nRT

(0.923 atm)(29.6 L) = n(0.08206 L*atm/mol*K)(290.15 K)

27.3208 = n(23.809709)

1.15 = n

The table shows the concentration of a reactant in the reaction mixture over a period of time.
Reactant Concentration
Time Concentration
Os 1.8 M
210 s 1.2 M
450 S 0.8 M
580 S 0.6 M
720 s 0.4 M
What is the average rate of the reaction over the first 450 seconds? (3 points)
Ob
Oc
Od
1.7 x 10-3
1.9 x 10-3
2.0 x 10-3
2.2 x 10-3

Answers

The average rate of the reaction over the first 450 seconds -2.2×10⁻³ M/s

What is speed?

Speed is defined as the rate of change of the distance moved with time. Mathematically, it can be expressed as:

Speed = distance / time

With the above idea, we can obtain the rate of the reaction as illustrated below:

How to determine the rate of the reaction over the first 45osChange in concentration = 0.8 - 1.8 = -1 MTime = 450 sSpeed = ?

Rate = Change in concentration / time

Rate = -1 / 450

Rate = -2.2×10⁻³ M/s

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D is correct for number 2. i just finished

explanation; i got it right

When enzyme activity rate has reached stability, an increase in the enzyme concentration will.

Answers

When enzyme activity rate has reached stability, an increase in the enzyme concentration will not make any difference in the enzyme rate.

What is an enzyme?

Enzyme are proteins that act as biological catalysts.

How is enzyme activity measured?

Enzyme activity is measured in micromoles of substrate converted (or product generated) per minute, which represents the rate of reaction catalyzed by that enzyme.

The activity an enzyme catalyzes in a reaction is a measure of how much of it is present. Numerous variables, including temperature, pH, and others, have an impact on the connection between activity and concentration.Every time an enzyme's concentration rises, so does its activity. This is as a result of the availability of additional enzymes to bind to the substrate. The reaction time quickens as a result. Increasing the concentration of the enzyme will quicken the reaction as long as there is a substrate for it to bind to.

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When enzyme activity rate has reached stability, an increase in the enzyme concentration will not make any difference in the enzyme rate.

What is an enzyme?

Enzymes are proteins that act as biological catalysts.

How is enzyme activity measured?

Enzyme activity is measured in micromoles of substrate converted (or product generated) per minute, which represents the rate of reaction catalyzed by that enzyme.

The activity an enzyme catalyzes in a reaction is a measure of how much of it is present.Numerous variables, including temperature, pH, and others, have an impact on the connection between activity and concentration.Every time an enzyme's concentration rises, so does its activity.This is as a result of the availability of additional enzymes to bind to the substrate.The reaction time quickens as a result.Increasing the concentration of the enzyme will quicken the reaction as long as there is a substrate for it to bind to.

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is generally regarded as one of the most accomplished and influential
scientists in history.

Answers

answer - Albert Einstein

explanation -

Albert Einstein is arguably the most influential scientist of the 20th century. His … general theory of relativity changed our understanding of space and time, becoming one of the two pillars of modern physics – the other being quantum mechanics.

What is occurring when reactants are mixed and heated and liquid collects in the sidearm of the apparatus

Answers

When reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

What is a chemical reaction?

A chemical reaction is said to occur when reactants are combined to form products. We must note that the formation of products is evidenced by;

Appearance of a liquidAppearance of a gas Appearance of a solid

Hence,  when reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

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Which fundamental mechanisms appear in the reaction between pyridinium chlorochromate and a secondary alcohol

Answers

The idea is to foretell the formation of a carbonyl compound by the reaction between alcohol and too much pyridinium chlorochromate. An oxidizing agent called pyridinium chlorochromate converts the alcohol group into the 1carbonyl group.

The carbonyl molecule that results from the reaction will depend on the reactant's OH group. Pyridinium chlorochromate [PCC] converts primary OH to aldehydes, whereas it converts secondary OH to ketones, and oxidation of tertiary OH has little effect. Alcohols and pyridinium chlorochromate [PCC] react to create a carbonyl molecule.

From primary alcohols to aldehydes and from secondary alcohols to ketones, pyridinium chlorochromate oxidizes alcohols one step up the oxidation ladder. pyridinium chlorochromate will not oxidize aldehydes to carboxylic acids, in contrast to chromic acid. Comparable to Pyridine (the Collins reagent) and CrO3 will both oxidize primary alcohols to aldehydes. Here are two instances of pyridinium chlorochromate being used.

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Identify the products of the reaction between 2KOH and H₂SO4.
O KSO and H2₂O
OK2SO4 and H₂O
O H₂O and K₂SO4
O KH2 and SO4

Answers

Answer:

C.) H₂O and K₂SO₄

Explanation:

This appears to be a double-displacement reaction. In these reactions, the cation of one substance is swapped with the cation of another.

So, K⁺ from KOH is swapped with the H⁺ from H₂SO₄. The new compounds should have an overall charge of 0. Therefore, it may be necessary to modify the amount of each ion (not just be 1:1).

K₂SO₄
-----> K⁺ and SO₄²⁻

-----> + 1 + 1 + (-2) = 0

H₂O

-----> H⁺ and OH⁻

-----> + 1 + (-1) = 0

An iron bar at 200°c is placed in thermal contact with an identical iron bar at 120°c in an isolated system. after 30 minutes, both iron bars are at 160°c. if the iron bars were placed in thermal contact in an open system instead of an isolated system, how would the results be different? assume that the room temperature is 25°c.

Answers

Answer: The correct answers are A and B.
Explanation:
Conduction: In the conduction, the heat is
transferred from the hotter body to the colder
body until the temperature on both bodies are
equal.
In thermal equilibrium, there is no heat
transfer as the heat is transferred till the
temperature on the bodies are not same.
In the given problem, an iron bar at 200°C is
placed in thermal contact with an identical iron
bar at 120°C in an isolated system. After 30
minutes, the thermal equilibrium is attained.
Then, the temperature on both iron bars are
equal.Both iron bars are at 160°C in an isolated
system.
But in an open system, the temperatures of the
iron bars after 30 minutes would be less than
160°C. There will be heat lost to the
surrounding. The room temperature is 25°C.
There will be exchange of the heat occur
between the iron bars and the surrounding. But
It would take more than 30 minutes for both iron
bars to reach 160°C because heat would be
transferred less efficiently.
Therefore, the correct options are (A) and (B).

Engine cooling fluid is a. distilled water. b. tap water from a faucet. c. a mixture of alcohol and water. d. a mixture of antifreeze and water.

Answers

Engine cooling fluid is a mixture of antifreeze and water.

Hence option (d) is correct.

A liquid mixture of water and antifreeze called engine coolant is kept in your car's radiator.

Any compound that lowers water's freezing point is considered antifreeze and protects a system against the negative effects of ice formation.

Radiators are protected from deterioration by antifreezes, which are frequently added to water in car cooling systems.

It keeps your engine from freezing in extremely cold weather or overheating in hot weather, both of which can cause serious problems for an engine.

Although it's standard practice to combine water and antifreeze 50/50 in a car's cooling system, this guideline is not inflexible.

Mixtures can be changed to either raise the boiling point or lower the freezing point limit due to the wide range of weather conditions that cars can operate in.

Hence, Engine cooling fluid is a mixture of antifreeze and water.

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Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair

Answers

The list of acceptable species of wood materials used in aircraft structure is found in Table 1-1 on Page 1-2 of AC 43.13-1B.

Which types of wood are used in aircraft repair?

Construction of Aircraft with Wood There are four types of wood that are frequently used in the manufacture of aircraft. These include Douglas fir, Sitka spruce, birch, and ash. Additionally, gabon, mahogany, balsa, and pine serve specific purposes. Softwood Sitka Spruce grows in both Canada and the United States of America.

What wood is used for aircraft?

Contrary to popular opinion, Howard Hughes' Spruce Goose was made of birch, not spruce, despite the fact that Sitka spruce is the most often used wood in airplanes. Spruce is regarded as the best natural material for building aircraft because it has one of the highest strengths-to-weight ratios.

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a major textile dye manufacutrer developed a new yellow dye. the dye has a percent composition of 75.95%C, 17.72%n and 6.33%H by mass with a molar mass of about 240g/mol. determine the molecular formula of the dye

Answers

The molecular formula of dye:

A major textile dye manufacturer developed a new yellow dye with a molecular formula [tex]C_{15}N_{3}H_{15}[/tex].

Given:

Percentage composition:

C = 75.95%

N = 17.72%

H = 6.33%

Molar mass = 240 g

To find: molecular formula of dye

Calculation:

Let's assume the mass of the compound is 100 gm.

So,  Mass of C = 75.95 gm

Mass of N = 17.72 gm

Mass of H = 6.33 gm

The number of moles = given mass/mass

Therefore, the number of moles of C = 75.95/12 = 6.33

The number of moles of N = 17.72/14 = 1.27

Number of moles of H =6.33/1 = 6.33

Simplest ratio:

C = 6.33/1.27 = 4.98 =5

N = 1.27/1.27 = 1

H = 6.33/1.27 = 4.98 =5

Therefore, the empirical formula is [tex]C_{5}NH_{5}[/tex]

The mass of empirical formula = 12 x 5 + 14 + 1 x 5 = 79 gm

Number of moles= molar mass/ empirical formula

n = 240/79 = 3.04 =3

Therefore, molecular formula = empirical formula x n

Hence, molecular formula = [tex]C_{15}N_{3}H_{15}[/tex]

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Elements on the periodic table are arranged in order by their

Answers

Answer:

in order of increasing atomic number, or the number of protons in an atom's nucleus, which generally coincides with increasing atomic mass

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An equimolar mixture of two optical isomers is called a ________. An equimolar mixture of two optical isomers is called a ________. enantiomer achiral diastereomer structural isomer racemic mixture

Answers

Two optical isomers can form:

An equimolar mixture of two optical isomers is called a racemic mixture.

What is a Racemic mixture?

An equimolar mixture of two enantiomers that is optically inactive is known as a racemic mixture (or racemate) (i.e. does not rotate plane-polarized light).

The racemic mixture can be created by:

Combining enantiomers in equal amounts, or (more frequently) Reactions that create one or more new chiral centers without the influence of chirality (i.e. chiral reagent, catalyst, etc.)

The light that is plane-polarized does not spin in an optically inactive mixture.

Since each enantiomer rotates plane-polarized light to an equal and opposite extent, an equimolar mixture of two enantiomers will typically result in a racemic mixture. There won't be any net rotation if they are both present in equal proportions.

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Short AnswerNote: Your teacher will grade your response to ensure you receive proper credit for your answerDescribe how you would estimate the square root of a number that is not a perfect square without using a calculator PLZZ HURRY I am being timedHenry divided his socks into five equal groups. Let s represent the total number of socks. Which expression and solution represent the number of socks in each group if s = 20?A) StartFraction s Over 5 EndFraction; when s = 20, the number of socks in each group is 4.B) StartFraction s Over 5 EndFraction; when s = 20, the number of socks in each group is 15.C) s minus 5; when s = 20, the number of socks in each group is 4.D) s minus 5; when s = 20, the number of socks in each group is 15. .Why is physical education important to my health? constrast a mixture and a compound , how are. they different? HELP ASAP!!!!!!!!!!What is sous-vide? A food stabilizerB liquid food that chefs make into a spherical shape C food that chefs quickly freeze using liquid nitrogen D food that chefs seal in a plastic bag and cook under controlled temperature conditions A long, circular aluminum rod is attached at one end to a heated wall and transfers heat by convection to a cold fluid. If the diameter of the rod is doubled, by how much would the rate of heat removal change What conditions would affect how much people would use your business?The business is and Ice Cream Shop. a c program to check the greaster number among the two entered number using if else statement please urgent please help I need 5 businesses and there saying (tag line)Example: (Arby)-We have the meats what is the approximate area of the shaded sector in the circle shown below? Briefly define the temFree writing what is the real name of mona lisa identifiqaen el cuento la princesa y la sal todos sus elementos Market researchers wanted to know whether the placement of a new product on a supermarket shelf significantly increases the percent of shoppers who will buy the product. At Supermarket X, a new product was placed on the top shelf, and at Supermarket Y, the product was placed one shelf below the top shelf. To observe buying habits, the researchers selected a random sample of 364 shoppers at X and another random sample of 327 shoppers at Y. Of the selected shoppers at X, 15 bought the product, and of the selected shoppers at Y, 19 bought the product. Which of the following is the most appropriate method for analyzing the results?a. A two-sample z-test for a difference in sample proportions. b. A two-sample z-test for a difference in population proportions c. A one-sample z-test for a sample proportion d. A one-sample z-test for a population proportion e. A one-sample z-test for a difference in sample proportions Write the equation 9 = -5x + 4 in the form ax + b = c, where c = 9.What are the values of a and b? Hi i need help with this, it shouldnt be too hard.Describe the difference between gene mutations and chromosomal mutations, including:- What are they?- How do they occur, including their types?- When will they result in a change in the phenotype of offspring? WHY YOU LIKE TO LEARN? Your parents are building a pool that is 7 ft wide and 12 ft long. They want to put a walkway around the pool that is x ft wide on all sides. Write a polynomial that represents the combined area of the pool and walkway. Answer needs to be in standard form and use x as your variable. Which Statement is the Best Caption for this imageAnswer is AA. The relationship between state governments and the federalgovernment has become more cooperative over time.B. The relationship between state governments and the federalgovernment was most cooperative under the system of newfederalism.C. The relationship between state governments and the federalgovernment shifted many times over the years and is now lesscooperative than it once was.D. The relationship between state governments and the federalgovernment has been the same since the founding of the nation.