# Stoichiometry Worksheet 2 Percent Yield Answers

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Description: Using Hoffmann’s apparatus for electrolysis, a chemist splits 36 grams of water into gaseous elements. How many grams of hydrogen gas should it take?

## Stoichiometry Worksheet 2 Percent Yield Answers Name Data PdStoichiometry Worksheet 2: Percent Yield For each of the following problems: a. Write a balanced chemical equation b. Say what is given (with units) and what you want to find (with units) c. Show configuration with units. Check sig figs, give the final answer with units and labels.1. Using Hoffmann’s apparatus for electrolysis, a chemist splits 36 grams of water into gaseous elements. How many grams of hydrogen gas should I get (theoretical yield)? Equation: Before the substitution 2 po. Remember that liquid sodium reacts with chlorine gas to form sodium chloride. You want to make 581 grams of sodium chloride. How many grams of sodium do you need? Eat 180.0 grams of glucose (90 M&Ms). If glucose C6H12O6 reacts with oxygen gas to form carbon dioxide and water, how many grams of oxygen must be inhaled to burn the glucose? Suppose 4.61 g of zinc is allowed to react with hydrochloric acid to form zinc chloride and hydrogen gas. How Much Zinc Chloride Should I Get? Let’s say you actually extracted 8.56 g of zinc chloride. What is your percentage yield? Chemistry – Mr Montero 1 U7 ws 2 5. Determine the mass of carbon dioxide that must be produced in the reaction between 3.74 g of carbon and excess O2. What is the % yield if 11.34 g of CO2 is recovered? 6. Potassium oxide is formed in the reaction between excess K (s) and 4.28 g O2 (g). What mass do you expect to achieve (theoretical yield)? If 17.36 g of K2O are actually produced, what is the percent yield? 7. If 5.38 g of carbon dioxide gas is formed with some water vapor, the mass (and percent yield) of carbon dioxide formed by the reaction between the excess CH4 and 11.6 g of O2 can be experienced. Determine the mass (and percent yield) of water vapor that must be formed when 15.8 g of NH3 react with excess oxygen to form water and nitric oxide (NO). The mass of water actually formed is 21.8 g. Check Your Answers (1) 4.0 g H2 (2) 228 g Na (3) 192 g O2 (4) 9.61 g Zn, 89.1% (5) 13.73 g CO2 (6) 25, 3 g K2O, 68.8% (7) 7.99 CO2 , 67.4% (8) 25.1 g H2O, 86.9% Chemistry – p. Montero 2 U7 ws 2

### Solved: T F Stoichiometry Is The Section Of Chemistry Involving Calculations Based On Mass And Mole Relationships Of Substances In Chemical Reactions: T F A Mole Ratio Is Only Defined As The

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