Stoichiometry Practice Problems
Name: ________________________ Hour: _____
Stoichiometry Worksheet #1
Be sure to balance the equations before you do any calculations!
1) HCl + Cu ( CuCl2 + H2
How many grams of hydrogen are produced when 67.12 g of hydrochloric acid (HCl) are reacted with copper?
2) NaClO3 ( NaCl + O2
How many moles of sodium chloride (NaCl) are produced in the decomposition reaction of 145.73 g sodium chlorate (NaClO3)?
3) Mg(OH)2 ( MgO + H2O
98.03 g of magnesium hydroxide are decomposed in the above reaction. How many grams of water are produced?
4) Pb(NO3)2 + NaCl ( PbCl2 + NaNO3
How many grams of lead (II) nitrate are needed to produce 49.35 g of sodium nitrate?
5) Cu + AgNO3 ( Ag + Cu(NO3)2
How many moles of silver are produced when 36.92 grams of copper displaces silver from silver nitrate in the above reaction?
6) HCl + CaCO3 ( H2O + CO2 + CaCl2
Hydrochloric acid (HCl) is reacted with calcium carbonate to produce 7.45 moles of carbon dioxide. How many grams of hydrochloric acid were needed to produce this amount of carbon dioxide?
7) Fe + H2O ( Fe2O3 + H2
If 42.84 grams of iron are reacted with water, how many grams of iron (III) oxide are produced?
8) Al2(SO4)3 + Ca(OH)2 ( Al(OH)3 + CaSO4
How many grams of aluminum hydroxide are produced if 165.7 grams of aluminum sulfate are reacted with calcium hydroxide?
9) Na + F2 ( NaF
In the synthesis reaction above, 29.48 grams of sodium are reacted with fluorine. How many moles of NaF are produced?
10) F2 + AlBr3 ( Br2 + AlF3
If 8.4 moles of aluminum bromide is reacted with fluorine, how many grams of aluminum fluoride are produced?
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