Stoichiometry ws 4
Assume all reactions on this worksheet to have occurred at STP.
Be sure to write a balanced equation for each reaction.
1) How many moles of nickel is required to completely react with 6.213 moles sulfuric acid (H2SO4) to
produce nickel (III) sulfate?
2) When fossil fuels are burned, nitrogen will react with oxygen to produce dinitrogen pentoxide. How
many grams of oxygen are needed when 6.794 moles of nitrogen is burned?
3) Small iron fillings are often used in fireworks. Calculate the mass (in grams) of iron (III) oxide
produced when 2.500 grams of iron is burned.
4) Calculate the number of molecules of carbon dioxide are produced when 97.6 grams of pentane is
burned?
5) When 12.00 liters of chlorine gas is added to excess hydrogen gas, how many grams of hydrogen
chloride are produced?
6) Aluminum metal is formed according to the Hall process where aluminum ore (Al2O3) reacts with
carbon to produce aluminum and carbon dioxide. Calculate the number of atoms of aluminum produced
from 56000. grams of aluminum ore
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