Here is a 10 question quiz on percentage and actual yield

1) For the balanced equation shown below, if the reaction of 71.6 grams of O2 produces a 45.1% yield, how many grams of CO would be produced?
                                    C2H3OF + O2 --> 2CO + H2O + HF
* 54.328 grams 
* 56.523 grams
* 55.987 grams
* 56.985%

2) For the balanced equation shown below, if the reaction of 39.3 grams of C6H5Cl produced 11.3 grams of H2O, what is the percent yield?
                           4C6H5Cl + 29O2 --> 24CO2 + 10H2O + 2Cl2
* 69.4%
* 70.8 grams 
* 71.9%
* 70.9%

3) For the balanced equation shown below, if the reaction of 97.4 grams of CBr4 produces a 37.8% yield, how many grams of Br2 would be produced?
                                            CBr4 + O2 --> CO2 + 2Br2
* 35.441 grams
* 35.332%
* 36.579 grams 
* 32.981grams 

4) For the balanced equation shown below, if the reaction of 27.9 grams of O2 produces a 47.0% yield, how many grams of H2O would be produced?
                                    C4H8O2 + 5O2 -- 4CO2 + 4H2O
* 5.435%
* 6.342 grams
* 5.304 grams
* 5.905 grams

5) For the balanced equation shown below, if the reaction of 87.3 grams of O2 produces 7.54 grams of H2O, what is the percent yield?
                                2C6H6O2 + 13O2 --> 12CO2 + 6H2O
* 28.6%
* 35.3%
* 33.3%
* 33.6 grams

6) For the balanced equation shown below, if the reaction of 42.0 grams of C2H4O2S produces a 32.4 grams of CO2, what is the percent yield?
                              2C2H4O2S + 7O2 --> 4CO2 + 4H2O + 2SO3
* 80.7%
* 83.5%
* 79.9 grams
* 79.8%

7) For the balanced equation shown below, if the reaction of 34.4 grams of Ca(OH)2 produces 9.77 grams of OH, what is the percent yield?
                                3Ca(OH)2 + H3PO4 --> Ca3(PO4)2 + 6OH
* 61.8%
* 60 grams
* 58.7%
* 56.4%

8) For the balanced equation shown below, if the reaction of 76.0 grams of O2 produces a 64.1% yield, how many grams of H2O would be produced?
                                    C4H10O3 + 5O2 --> 4CO2 + 5H2O
* 24%
* 30.725 grams
* 26. 192 grams
* 27.403 grams


9) For the balanced equation shown below, if the reaction of 35.5 grams of ZnS produces 17.3 grams of SO2, what is the percent yield?
                                       2ZnS + 3O2 --> 2ZnO + 2SO2
* 43.6%
* 70.8%
* 72 grams
* 83.7%


10) For the balanced equation shown below, if the reaction of 71.2 grams of H2O produces 108 grams of HCl, what is the percent yield?
                                       PCl3 + 3H2O --> H3PO3 + 3HCl
* 74.8%
* 67.3grams
* 89.8%
* 74.8grams

For a good periodic table check out ptable.com