Chemistry – Stoichiometry Worksheet- must balance equations!!
1.
How many grams of calcium carbonate are required to prepare 50.0 g of calcium
oxide?
CaCO3  CaO + CO2
2.
When 0.50 g of magnesium reacts with silver nitrate, how many moles of silver are
prepared?
Mg + AgNO3  Mg(NO3)2 + Ag
3.
If 1.20 moles of copper react with mercuric nitrate, how many moles of mercury
form?
Cu + Hg(NO3)2  Cu(NO3)2 + Hg
4.
When 60.0 g of aluminum react with hydrochloric acid, how many grams of
hydrochloric acid react?
Al + HCl  AlCl3 + H2
5.
What mass of Na2SO4 is produced when sulfuric acid reacts with 0.500 moles of
sodium chloride?
NaCl + H2SO4  HCl + Na2SO4
Stoichiometry Problem Set #2
Directions: You must balance out the equations before the stoichiometry!!
How many moles of sulfur are required in the preparation of 800 grams of sulfur
dioxide?
S + O2  SO2
In the production of methanol, how many atoms of hydrogen are required to react
with 2.25 x 1022 molecules of carbon monoxide?
CO + H2  CH3OH
If 211 grams of propane are burned, what volume of carbon dioxide is formed?
(1 mol = 22. 4 L)
C3H8 + O2  CO2 + H2O
How many moles of HCl are needed to form 3.5 * 103 moles of Cl2?
HCl + O2  H2O + Cl2
If 90.0 g of barium chloride react with sulfuric acid, how many grams of HCl are
produced?
BaCl2 + H2SO4  BaSO4 + HCl
2.
How many grams of sodium peroxide must react with water to produce 35.0 cubic
decimeters of oxygen?
Na2O2 + H2O  NaOH + O2
3.
In the Haber process for synthesizing ammonia, NH3, how many cubic decimeters of
ammonia gas are produced when 400.0 cubic decimeters of nitrogen react with
hydrogen?
4.
How many cubic decimeters of hydrochloric acid gas are formed when 170 cubic
decimeters of hydrogen combine with chlorine?
5.
How many grams of sodium iodide are produced by the decomposition of 60.0 g of
sodium iodate?
6.
If 10.0 g of aluminum sulfide are produced by the reaction of aluminum and sulfur,
how many grams of sulfur were needed?
7.
If 2.5 g of cupric sulfate decomposed upon heating, how many grams of cupric
oxide formed?
8.
If 22.4 dm3 of steam react with MgO, calculate the mass of the product that will
form.