Write the wavefunctions describing all 4 bonds in methane molecule using the VB theory.

1. Suppose the following reaction takes place: 2A+B+C----->products. The following observations are made: Halving the ]A] halves the rate of reaction, trippling the [B] has no effect f the rate of reaction, and tripling [C] increases the rate of reaction nine-fold. What is the overall order of the reaction?

Please explain in clear details, thank you!

1) Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures:

CO(g)+Cl2(g)?COCl2(g)

Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 459?C . At equilibrium, the concentrations were measured and the following results obtained:

What is the equilibrium constant, Kp, of this reaction?

2) In Part A, you were given the equilibrium pressures, which could be plugged directly into the formula for K. In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K.

Part B

The following reaction was performed in a sealed vessel at 753?C :

H2(g)+I2(g)?2HI(g)

Initially, only H2 and I2 were present at concentrations of [H2]=3.35M and [I2]=2.15M. The equilibrium concentration of I2 is 0.0500M . What is the equilibrium constant, Kc, for the reaction at this temperature?

Express your answer numerically.

Determine the [OH-], [H+], pH, and pOH of each of the following: a. 0.29 M Sr(OH)2 b. A 2.50 L solution prepared by dissolving 15.6 g of KOH in distilled water. c. A 250 ml solution prepared by dissolving 42.1 g of NaOH in distilled water d. A 300 ml solution prepared by dissolving 5.00 g of HI in 300ml of a 0.796 M solution of HNO3?

Which conformer is more stable and by how much?

1)equatorial 2-methylcyclohexanone 2) axial 2-,ethylcyclohexanone

for each conformer, draw out the expected major product (with stereochemistry) for addition of methyl magnesium bromide.

Question 2 options:

For the reaction  CH4 + O2 →CO2 + H2OCH4 + O2 →CO2 + H2O

what are the coefficients for each reactant or product?

a. CH₄

b. O₂

c. CO₂

d. H₂O

Question 3 (2 points)

Question 3 options:

For the reaction  NaOH + AlCl3 →NaCl + Al(OH)3NaOH + AlCl3 →NaCl + Al(OH)

what are the coefficients for each reactant or product?

a. NaOH

b. AlCl₃

c. NaCl

d. Al(OH)₃

Question 4 (2 points)

Question 4 options:

For the reaction  H2O2 →O2 + H2OH2O2 →O2 + H2O

what are the coefficients for each reactant or product?

a. H₂O₂

b. O₂

c. H₂O

Question 5 (2 points)

Question 5 options:

For the reaction  FeSO4 + Na3PO4 →Fe3(PO4)2 + Na2SO4FeSO4 + Na3PO4 →Fe3(PO4) + Na2SO4

what are the coefficients for each reactant or product?

a. FeSO₄

b. Na₃PO₄

c. Fe₃(PO₄)₂

d. Na₂SO₄

Question 6 (2 points)

Question 6 options:

For the reaction  C6H12O6 + O2 →CO2 + H2OC6H12O6 + O2 →CO2 + H2O

what are the coefficients for each reactant or product?

a. C₆H₁₂O₆

b. O₂

c. CO₂

d. H₂O

True or False

1. Zaitzeff's rule is usefull for predicting the regiochemistry of electrophilic addition reaction ?

2. Markovnikov's Rule is usefull for predicting the regiochemstry  of electrophilic addition reaction ?

3. A Alkene bromination reaction is an example of an syn addition ?

4.A Hydroboration-Oxidation reaction is an example of an anti-addition ?

5. Carbocations can combine with a nucleophile, eliminate, or rearrange ?

6. A steroespecfic reaction will prdouce only a certain set stereoisomoers due to the reaction mechanisim. ?

In an experiment like the one you will complete, a student collected the following data. Use this information to complete the questions below. YOU MUST SHOW ALL CALCULATIONS.

Change in Mass of Anode: -0.023 g

Change in Mass of Cathode: +0.019 g

Average Current: 38.7 mA

Time of Electrolysis: 1860 s

d) Using the average of the change in mass of copper from the electrodes in the electrolytic cell, calculate the molar mass of copper.

Glucose, Sucrose, Fructose, and Amylose. Which carbohydrate listed can be hydrolyzed, and why?

Perhaps you recall that when table salt, NaCl, is added to water, the freezing point of water is lowered. Consider a system composed of a mixture of 2.5kg of ice and 50g of liquid water and a small, separate container of finely powdered salt. This physical system is contained in a fully insulated container that prevents all thermal interactions with the environment. Both the salt and the ice-water mixture are initially at the freezing point of water, 0 °C. The salt is then added to the ice-water mixture, and the system of ice-water and salt is allowed to come to thermal equilibrium. The final equilibrium temperature is less than 0 °C.

Use the Energy-Interaction Model Preview the document to predict if there will be a greater or lesser amount of ice in the final equilibrium state than in the initial state before the salt was added. Your explanation should include a complete Energy-System Diagram. [The simplest way to model this physical system is with one thermal energy system for everything and one bond energy system, i.e., in terms of the model, it is not useful to distinguish between the various chemical components in order to answer this particular question.]

A solution is made by combining 15.0 mL of 17.0 M acetic acid with 5.50 g of sodium acetate and diluting to a total volume of 1.50 L.

what is the pKa?

what is the pH?

A quantity of 4.50 g CaC2 is reacted with an excess of water at 298K and atmospheric pressure. CaC2 (s) + 2 H2O (l) --> Ca(OH)2 (aq) + C2H2 (g) Calculate the work done in Joules by the Acetylene gas against the atmospheric pressure.

Reference https://www.physicsforums.com/threads/calculate-the-work-in-joules-by-the-acetylene-gas.794536/

Molar Mass by Freezing Point Depression I am doing a latenite lab on Molar Mass by Freezing Point Depression. I have asked this question on Course Hero and twice on Chegg and the tutors keep giving me different answers. Sample 2 has a van't Hoff factor of 2. It began freezing at -3.6. I added 2 g of the unknown to 10 mL of water. I was given that the Kf for water is 1.86.

Calculate the molar mass of FP sample 2

The vapor pressure of liquid benzene is 17.7 kPa at 30 ºC and 37.7 kPa at 50 ºC. a) Calculate the enthalpy of vaporization of benzene. b) Estimate the vapor pressure at 10 ºC [use your answer from part (a)]. c) Estimate the normal boiling point of benzene (use a vapor pressure of 1 bar and use the result from part (a)]