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9.3 Practice Problems Percent Yield

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					9.3 Practice Problems                                              Name__________________________

% Yield                                                            Period ________ Date ____________

Solve each of the following as directed. Show all your work.

1. Determine the percent yield for the reaction between 6.92 g of potassium and excess oxygen if 7.36 g
   of potassium oxide is produced in this direct combination (synthesis) reaction.




2. Determine the percent yield for the reaction between 82.4 g of rubidium and excess oxygen if 39.7 g of
   rubidium oxide is formed in this direct combination (synthesis) reaction.




3. Determine the percent yield for the reaction between 28.1 g of Sb4O6 and excess carbon if 17.3 g of
   antimony is recovered along with an unknown quantity of carbon monoxide.




4. Determine the percent yield for the reaction between 45.9 g of sodium bromide and excess chlorine gas
   if to produce 12.8 g of sodium chloride and an unknown quantity of bromine gas.




1) 88.2 % 2) 44.1 % 3) 73.6 % 4) 49.0 %
5. Determine the percent yield for the reaction between 46.1 g of cesium and excess oxygen if only 28.3 g
   of cesium oxide is produced.




6. Determine the percent yield for the reaction between 15.8 g of ammonia and excess oxygen to produce
   21.8 g of nitrogen monoxide and some amount of water.




7. Determine the percent yield for the reaction between 98.7 g of Sb2S3 and excess oxygen if 72.4 g of
   Sb4O6 is recovered along with an unknown amount of sulfur dioxide.




8. Determine the percent yield for the reaction between 46.5 g of zinc sulfide and excess oxygen if 18.4 g
   of zinc oxide is recovered along with an unknown quantity of sulfur dioxide.




5) 57.9 % 6) 78.1 % 7) 85.5 % 8) 47.4 %

				
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