The reaction of a(n) _____ with an alcohol cannot be used to prepare an ester. group of answer choices acid halide carboxylic acid acid anhydride amide

D is the correct answer. One of the peaks overlaps with the sp C-H peaks.

Fermi doublets are small peaks in nuclear magnetic resonance (NMR) spectra caused by nuclei of two adjacent atoms in a coupling. They are frequently difficult to identify due to their small size in comparison to other peaks in the NMR spectrum. Furthermore, one peak in the doublet can overlap with other peaks in the spectrum, particularly sp3 C-H peaks, making the Fermi doublet difficult to distinguish from other peaks. This can lead to the Fermi doublet being missed or misinterpreted in NMR analysis, resulting in errors in peak assignment and molecular structure identification.

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Therefore, the concentration of \(Zn^2+\)(aq) ion at the cathode is 0.050 M.

When a current is applied to an aqueous solution of sodium sulfide, hydrogen gas (\(H_2\)) will be produced at the cathode, while sodium metal (Na) and sulfur (S) will be produced at the anode. The half-reactions occurring are:

Cathode: 2H+(aq) + 2e- → (\(H_2\)(g)

Anode: 2OH-(aq) → \(1/2O_2(g) + H_2O(l)\) + 2e- ; \(2S_2-(aq) + 2H_2O\)(l) → \(SO_4^2-\)(aq) + 4H+(aq) + 2e- ; 4OH-(aq) → O2(g) +\(2H_2O\)(l) + 4e-

The voltage generated by the zinc concentration cell described by Zn(s)|\(Zn^2+(aq,0.100 M)|| Zn^2+\)(aq,? M)|Zn(s) is 13.0 mV at 25°C. Using the Nernst equation, we can calculate the concentration of \(Zn^2+\)(aq) ion at the cathode:

Ecell = E°cell - (RT/nF)lnQ

where E°cell = 0.00 V, R = 8.314 J/(mol*K), T = 298 K, n = 2, F = 96485 C/mol, Q =\([Zn^2+(aq,0.100 M)]/[Zn^2+(aq, M)]\)

Solving for \([Zn^2+(aq,? M)], we get [Zn^2+(aq, M)]\) = 0.050 M.

So. Therefore, the concentration of \(Zn^2+\)(aq) ion at the cathode is 0.050 M.

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A compound's solubility in water is determined by its chemical structure and polarity. To determine if a compound is soluble or has low solubility in water, its polar or nonpolar nature must be considered.

If the compound has a high polarity, it is more likely to be water-soluble than a compound with low polarity. Because water molecules are polar, they attract polar molecules, causing them to dissolve and creating a solution. In contrast, nonpolar compounds are less attracted to polar water molecules and are therefore not soluble in water. Additionally, molecular weight also affects solubility, with smaller molecules being more likely to dissolve in water than larger molecules.

If the compound is an acid or base, its solubility in water may be determined by considering its conjugate base or acid. In general, acidic compounds are more likely to dissolve in basic solutions, while basic compounds are more likely to dissolve in acidic solutions. However, there are exceptions to this rule, and it is always important to consider a compound's chemical structure and polarity when determining its solubility in water.

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The flattest and widest water drop was the one with the highest surface tension, indicating the highest attraction of the molecule to the surface.

This is because the molecules have a stronger cohesive force, which is the force of attraction between the molecules of the same substance, and a higher surface tension, which is the force of attraction between the molecule and the surface. The higher the cohesive force, the more the molecules will be attracted to each other and the higher the surface tension, the more the molecules will be attracted to the surface. Therefore, the flattest and widest water drop indicates the strongest attraction of the molecule to the surface.

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A unit cell can be visualized as a building block that, when replicated in all directions, creates the entire crystal lattice. Unit cells can have different shapes, the most common types of unit cells include simple cubic, body-centered cubic, and face-centered cubic etc.

(a) Definition of a unit cell: A unit cell is the basic repeating unit of a crystal lattice. It represents the smallest portion of a crystal that, when stacked together, can generate the entire crystal structure.

(b) Sketch of a body-centered cubic (BCC) unit cell is represented in the image below. In the BCC unit cell, atoms are located at the eight corners of the cube and one atom is positioned at the center of the cube.

(c) Coordination number in a BCC unit cell: The coordination number is the number of nearest neighboring atoms surrounding a central atom. In a BCC unit cell, each atom is in contact with eight nearest neighboring atoms: one in the center of the unit cell and one at each of the eight corners.

(d) Calculation for the atomic packing factor (APF) of a BCC unit cell:

The APF is calculated as the volume occupied by the atoms in the unit cell divided by the total volume of the unit cell.

For a BCC unit cell, the APF can be calculated as follows:

APF = (Number of atoms in the unit cell * Volume of each atom) / Volume of the unit cell

In a BCC unit cell, there are two atoms (one at the center and one at the corner), and the volume of each atom can be approximated as (\(4/3\)) * π * \((radius)^3\). The volume of the unit cell can be calculated as the cube of the edge length.

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Answer:

424.6g

Explanation:

Density is a measure of a substance's mass over its volume.

d = m/v

we can rearrange this equation to solve for mass algebraically.

dv = m

We can then substitute the given values for our variables in the problem and solve for our answer.

22mL(19.3g/mL)= 424.6g

Answer:

60m/min

Explanation:

speed = distance/time

           =7200m/120min

           =60m/min

Answer:

60

Explanation:

because 7200 divided by 120 is 60

Answer:

2 elements

Explanation:

There are the two elements that make water

Answer:

Explanation:

__________________________________________________________

According to Answers,

There is one covalent bond in a chlorine molecule. The formula for a chlorine molecule is Cl2, which means that there are two chlorine atoms bonded together per molecule. The structural formula for a molecule of chlorine is Cl-Cl, in which the line in between the symbols for the two atoms represents a single covalent bond.

__________________________________________________________

Hope this helps! <3

__________________________________________________________

g

Explanation:

3rd century fox news has been in the past year and it is a different person and you know what to do with a 3rd century fox news has been in the past year and it is a different person and you know what to do with a different person and you know what to do with a different person and you know what to do with a different person and you

\( + 6589235522210 | < > bhffgg256522..2229 \sqrt[ {y)(x { \frac{ \sqrt{ + - \times \\ \div \div \div \div \div \div \div \div \div \div 0.50144777778888888} }{?} }^{2} }^{?} \times \frac{?}{?} ]{?} | \)

Answer: Anaphylaxis

Explanation:

I have a nut allergy, and this has happened to me once. The doctors also told me a lot about anaphylaxis, and I like to learn about myself.

I hope this helps!! :)

The chemical formula of muscovite is given as (KF)₂(Al₂O₃)₂(SiO₂)(H₂O).

The mineral muscovite is very useful in the formation of rocks. It is composed of  aluminum and potassium in the hydrated form and is part of the mica family. It can be found in  igneous, metamorphic, and sedimentary rocks.

Rocks are massive structures which could be found above or below the earth's surface. They are formed by molten magma or by the deposition of materials in layers overtime. Some types of rocks are formed from changes in existing rocks.

The Muscovite could be used in cosmetics as well as to make a paint to shine The chemical formula of muscovite is given as (KF)₂(Al₂O₃)₂(SiO₂)(H₂O). We can see that it contains the elements aluminum, potassium and silicon.

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Answer:

Hi, try following the steps on the explanation on all your questions :) it's easy.

Explanation:

To determine the number of atoms in 0.85 moles of Sodium (Na), we need to use Avogadro's number, which is 6.022 x 10^23 particles per mole.

Number of atoms = moles x Avogadro's number

Number of atoms = 0.85 mol x 6.022 x 10^23 particles/mol

Number of atoms = 5.12 x 10^23 atoms

Therefore, there are approximately 5.12 x 10^23 atoms in 0.85 moles of Sodium (Na).

Answer:

8.1293534120006496

Explanation:

hope this helps

Answer:

13

Explanation:

It shows the answer in the text.

Answer:

True

Explanation:

Plant cells come in all shapes and sizes. Some are round, some are brick shaped, others look like shoe strings. The one thing they have in common is a rigid cell wall. This means that they cannot change shape very easily. If it's false, let me know it is false and i can change my answer for you

Answer:

True

Explanation:

The pH of the solution is 10.0773

What is pH ?

a metric for determining how basic or acidic a substance or solution is. The pH scale ranges from 0 to 14. A pH value of 7 is considered neutral on this scale, meaning it is neither acidic nor basic. It is more acidic if the pH value is below 7, and more basic if the pH value is above 7.

before adding HCL,

moles of NH3 = M*V =1.80 M * 350 mL = 630 mmol

moles of NH4Cl = M*V = 0.25 M *350 mL = 630 mmol

moles of HCl added=  M*V = 1.30 M *170 mL = 221 mmol

2 mmol of NH3 will react with this HCl to form 2 mmol of NH4Cl

After reaction,

630mol of NH3 = 630 mmol - 2 mmol  =628 mmol

mol of NH4Cl = 630 mmol + 2 mmol  =632mmol

total volume = 350 mL + 170 mL = 520 mL

[NH3] = number of mol / volume

          = 628 mmol/520 mmol

          = 1.2 M

[NH4Cl] = number of mol / volume

          = 632 mmol/520 mmol

          = 1.215M

p K b = -log K b

        = -log (1.2*10^-4)

       =3.92

use:

pOH  =p K b  +  log {[NH4Cl]/[NH3]}

         =3.92 + log (0.632/0.628)

          =3.9227

pH = 14 - pOH

      = 14 - 3.9227

      =10.0773

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Answer:

the particles must 1. collide

2. with sufficient energy

3. in proper orientation.

Explanation:

hope this helps

The given statement "The molar enthalpy of sublimation of a given substance can be determined if its enthalpies of fusion and vaporization are known" is true.

The molar enthalpy of sublimation of a substance can be determined if its enthalpies of fusion (melting) and vaporization (boiling) are known. The enthalpy of sublimation refers to the energy required to change a substance from the solid phase directly to the gaseous phase, bypassing the liquid phase.

The enthalpy change during sublimation can be calculated by considering the enthalpies of fusion and vaporization. When a substance undergoes sublimation, it first requires energy to melt from the solid phase to the liquid phase (enthalpy of fusion) and then additional energy to vaporize from the liquid phase to the gaseous phase (enthalpy of vaporization). The sum of these two enthalpies represents the overall energy change during sublimation.

Therefore, by adding the enthalpy of fusion and the enthalpy of vaporization, one can determine the molar enthalpy of sublimation for a given substance.

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The digestive and respiratory systems work together to provide the body with the nutrients and oxygen it needs to function. The digestive system breaks down food into smaller molecules that can be absorbed by the body.

The respiratory system delivers oxygen to the blood, which carries it to the cells throughout the body. The cells use the oxygen to break down the food molecules into energy. The digestive system also produces carbon dioxide as a waste product. The respiratory system removes carbon dioxide from the blood and releases it into the air. In addition to their shared role in providing the body with nutrients and oxygen, the digestive and respiratory systems also work together to protect the body from harmful substances. The digestive system produces digestive enzymes that break down food, but these enzymes can also damage the cells of the digestive tract. The respiratory system produces mucus that traps harmful particles in the air before they can reach the lungs.

The digestive and respiratory systems are two very important systems that work together to keep the body healthy. An example of how the digestive and respiratory systems work together is when the epiglottis, a flap of tissue that covers the trachea when you swallow, prevents food from entering your lungs.

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C2H2 will be left  when the burning is complete.

The equation of the reaction is; 2C2H2 + 5O2 --> 4CO2 + 2H2O

The number of moles of C2H2 reacting is = 1.20 g/26 g/mol = 0.046 moles

The number of moles of O2 is = 3.50 g/32 g/mol = 0.109 moles

Since;

2 mole of C2H2 reacts with 5 moles of O2

x moles of C2H2 reacts with 0.109 moles of O2

x = 2 mole × 0.109 moles/5 moles

x = 0.044 moles of C2H2.

It then follows that C2H2 is the reactant in excess so C2H2  will be left  when the burning is complete.

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Answer:

translation: Write the electronic configuration of 2 metallic elements.

Answer:

(See explanation)

Explanation:

Copper: [Ar] 3d¹⁰ 4s¹

Silver: [Kr] 4d¹⁰ 5s¹

Gasohol is a blend of gasoline and ethanol. To determine the maximum work that can be obtained by burning 1.003 mol of C2H5OH at 25°C and 1 atm, the Gibbs free energy equation can be utilized. What is Gibbs free energy equation? Gibbs free energy equation is a thermodynamic equation that quantifies the maximum quantity of work that may be obtained during a chemical reaction. T

he equation is as follows: ΔG = ΔH - TΔSThe values of ΔH and ΔS are calculated from thermodynamic tables or by calculating the enthalpy and entropy of the products and reactants, and the temperature, T, is usually specified in Kelvin. The change in Gibbs free energy, ΔG, is the maximum amount of energy that can be obtained from the reaction in the form of useful work if the reaction takes place at constant pressure and temperature. The reaction will proceed spontaneously if ΔG is negative. And if ΔG is positive, the reaction will not take place spontaneously. The solution to this problem is shown below:

First, let's figure out how much heat is produced when one mole of C2H5OH is burnt.ΔHrxn = [2(moles of CO2)(-393.5 kJ/mol) + 3(moles of H2O)(-285.8 kJ/mol)] - [(moles of C2H5OH)(-277.7 kJ/mol)]ΔHrxn = [2(2.006 mol)(-393.5 kJ/mol) + 3(3.009 mol)(-285.8 kJ/mol)] - [1.003 mol(-277.7 kJ/mol)]ΔHrxn = -2043.5 kJ/mol. Now, we'll figure out the entropy change for the reaction.ΔSrxn = [2(moles of CO2)(213.8 J/mol-K) + 3(moles of H2O)(69.9 J/mol-K)] - [(moles of C2H5OH)(160.7 J/mol-K)]ΔSrxn = [2(2.006 mol)(213.8 J/mol-K) + 3(3.009 mol)(69.9 J/mol-K)] - [1.003 mol(160.7 J/mol-K)]ΔSrxn = -104.3 J/mol-KThe temperature in Kelvin is 25°C.273 + 25 = 298 KΔG = ΔH - TΔSΔG = -2043.5 kJ/mol - (298 K)(-104.3 J/mol-K)/1000ΔG = -2032.6 kJ/mol. Therefore, the maximum work that can be obtained by burning 1.003 mol of C2H5OH is 2032.6 kJ/mol, which is the value of ΔG.

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The reactants, products and arrow pointing towards products are present in every chemical equation.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

YES

Explanation:

The addition of hydrogen carbonate to bromothymol blue turns the solution blue. Thus, option B is correct.

The balanced equation for the dissociation of bromothymol blue is:

\(\rm HC_2H_3O_2\;\leftrightharpoons H^+\;+\;C_2H_3O_2^-\)

The color of dissociated form is yellow and undissociated form is blue.

The addition of hydrogen carbonate results in the dissociated ions as:

\(\rm H_2CO_3\;\rightarrow\;2\;H^+\;+\;CO_3^-\)

The dissociation results in the increased hydrogen ion concentration. The undissociated form in the reaction mixture increases.

Thus, the color of the solution will turn blue. Hence, option B is correct.

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Answer:

A. The solution will remain yellow.

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

Answer:

d

Explanation:

Lead cannot melt at such level, hence it cannot break down into individual atoms or molecules. A change in the bonding of atoms or molecules is referred to as melting.

The metallic connections are broken and the atoms are made more mobile by the energy needed to melt the metal. Atoms have the same kinetic energy as they did as a solid at a particular temperature, such as the melting point.

No, an atom cannot be melted. The three common states of matter no longer hold true when you are dealing with so tiny a piece. Atoms do not alter until by nuclear fission or fusion.

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