3. Answer the following questions showing all work.
a. Balance the following Reaction. Show all work using the counting method.
C2H6
_02
_CO,+ H2O(8pt)
b. You have 12.51 grams of C2H6, how many moles do you have? (8pt)
C. If you have 5 molecules of C2H6 and 5 molecules of Oxygen. What is the
limiting reactant? Show all work. (Opt)
d. You need to produce 17.43 grams of Carbon dioxide gas. When
performing the lab you produce 16.87 grams, what is the percent yield?
Explain if the percent yield is desirable?

I ONLY KNOW ONE THAT IS

2C2H6+5O2=>4CO+6H2O

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be