To make a long story short, my youngest daughter decided to endure
through 4 semesters of chemistry, and now is paying up for it. She is
a talented little girl, but science is not her thing and it hurts for
me to see her study so hard but understand so little. It runs in the
family. I wanted to help myself, but me and my wife are no scientists
at all, plus it was so long ago. Tutoring is very very weak at where
she goes, and we know few friends around here who are capable of
helping, most of which already are looking at us the wrong way for
asking so much. I decided to open my pocket and let you, Chemistry
folks, help us out. I secretly took the next set of questions from my
daughters assignment section, and here they are. I understand that
many (or most) of you would have the problem to giving direct help
like this, "learning and understanding the material is the most
important", right ? Wrong. Only but a few of you would understand the
pain I feel when I see my daughter quietly cry in her room over her
low assignment grades after hours and hours of studying daily.
 
Below I copied down some of the questions and choice answers that came
along. I tried my best to copy down everything number to number, word
for word. Its a little bit difficult to transfer everything to text,
but I tried. Please feel free to clarify if you did not understand a
part.
 
I am asking for a list of answers to the problems, in numerical +
content format, as such :
 
Question 1: Answer 3. The number of moles is 4.0. 
Question 2: Answer 5. The reaction is reversed. 
 
Time is an issue, but I would like the answers to be correct. I do not
want to check my daughters answers and tell her that one of her
correct answers is incorrect simply because what was given to me is a
wrong answer. Once again I apologize for such rude question, but I am
desperate, and I ran out of all other options. I am also considering a
big tip for those who'll work hard on these, do all (or most) of the
questions, provide the correct answers and hopefully as soon as
possible.
 
Thank you once more. You are my last hope. 

7) Kp = 0.073 for : N2 + 3H2 <-> 2NH3 
 
In a container initial partial pressures of N2, H2 and NH3 are each
1atm. A catalyst is combined and the reaction proceeds to equilibrium.
What is the equilibrium PARTIAL PRESSURE of H2 ? 
 
1. 1.2atm 
2. 1.4atm 
3. 1.6atm 
3. 1.8atm 
5. 2.0atm 
 
8) 2SO2(g) + O2(g) <-> 2SO3(g) comes to an equilibrium. Then the total
pressure is decreased by increasing the volume of the container.
What will be the efect on the amount of SO3(g) present ? 
 
1. an increase 
2. cannot be answered without value of Delta H 
3. doesnt change at all 
4. cannot be answered without Kc and Kp values 
5. a decrease 
 
9) A 2.000 liter vessel is filled with 4.000 moles of So3 and 6.000
moles of O2. When the reaction
 2SO3(gas) <-> 2SO2(gas) + O2(gas) 
comes to equilibrium a measurement shows that only 1.000 mole of SO3
remains.
 How many moles of O2 are in the vessel at equilibrium ? 
 
1. none is correct 
2. 3.750 moles 
3. 7.000 moles 
4. 7.500 moles 
5. 12.000 moles 
 
10) The equilibrium constant for thermal dissociation of F2 
 
 F2(g) <-> 2F(g) 
 
is 0.300. 
 If initially 1.00 mol F2 is placed in a 1.00L container, which of the
folowing is the correct number of moles of F2 that have dissociated at
equilibrium ?
 
1. 0.548 
2. 0.239 
3. 0.176 
4. 0.213 
5. 0.130 
6. 0.474 
7. 0.956 
8. 0.418 
 
11) [N2O4]o and [NO2]o are the initial concentrations of N2O4 and NO2,
respectively. [N2O4] and [NO2] are the equilibrium concentrations.
 In the reaction 
 
  N2O4(g) <--> 2NO2(g) 
 
at equilibrium, which of the following relationship applies? 
 
1. [N2O4] = 2([N2O4]o - [NO2]) 
2. [N2O4]o - [N2O4] = 2([NO2]o - [NO2]) 
3. [N2O4]o - [N2O4] = 2[NO2] 
4. -([N2O4]o - [N2O4]) = [NO2] 
5. -2([N2O4]o - [N2O4]) = [NO2]o - [NO2] 
 
13) At 990deg C, Kc is 1.6 for the following reaction. If 4.0mol of
CO, 3.0mol of H2O, 2.0 mol of H2, and 1.0 mol of CO2 are placed in a
5.0 liter container and allowed to reach equilibrium at 990deg
Celcius, which response includes all of the following statements that
are correct and no others ?
 
 CO2(g) + H2(g) <--> H2O(g) + CO(g) 
 
 I. The concentration of H2 will be greater than 0.40 mol/L 
 II. The concentration of H2O will be less than 0.60 mol/L 
 III. The concentration of CO will be less than 0.80 mol/L 
 IV. The concentration of CO2 will be greater than 0.20mol/L 
 
1. I and IV 
2. I, II, and IV 
3. I and IV 
4. I and II 
5. I, II, III, and IV 
6. III and II 
7. III