Stoichiometry Review

Front

12.00 moles of NaClO₃ will produce how many grams of O₂?

Back

576 g of O₂

Front

In a lab, a scientist calculates that he should produce 12.3 grams of product in his experiment. When he is finished collecting his product, it weighs 10.1 grams. What is his percent yield?

Back

82%

Front

4 Al + 3 O₂ –> 2 Al₂O₃ How many moles of aluminum are needed to react with 45 grams of O₂?

Back

1.875 moles

Front

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the

Back

theoretical yield

Front

Mole ratios are obtained from the

Back

balanced chemical equation

Front

When does a chemical reaction stop?

Back

When the limiting reactant is used up

Front

Balance the reaction: CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)

Back

1,2,1,1

Front

Fe (s) + S (l) --> FeS (s)

In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?

Back

12.2 g

Front

Limiting Reagent

Back

what you run out of first

Front

Excess Reagent

Back

what you have left over