Name:
Date:
Hour:
Ahhh…, we have to do more math?!?
For the following problems, show ALL of the steps/work you have to go through to reach the final
answer. This includes showing all conversion factors you are using. The process is more important
than the product. BE SURE TO BALANCE ALL OF THE EQUATIONS!!!
1) N2(g) +
H2(g) 
NH3(g)
a. How many moles of hydrogen are needed to completely react with 2.3 moles of nitrogen?
b. How many moles of nitrogen are needed to react with 5.32 g of hydrogen?
c. How many grams of ammonia are produced from 58.32 grams of nitrogen?
2)
KClO3(aq)  KCl(aq) + O2(g)
a. How many moles of each product are produced by the decomposition of 6.8 moles of potassium
chlorate?
b. How many grams of reactant are needed to produce 42.7 mol of oxygen?
3)
Zn(s) + HCl(aq)  ZnCl2(aq) + H2(g)
a. How many grams of each product are produced from the reaction of 31.5 grams of zinc with an
excess of hydrochloric acid?
b. How many grams of hydrogen is produced from the reaction of 2.67 grams of zinc?
c. How many moles of zinc chloride are produced from reacting 1693.2g of HCl?
4)
C3H8(g) +
O2(g) 
CO2(g) +
H2O(l)
a. How many grams of oxygen are necessary to react completely with 1.453 grams of propane
(C3H8)?
b) How many grams of water can be produced from burning 93.5g of oxygen?