Percent Yield Calculations 1) Balance this equation (show all work): ____ Mg + ____ HNO3  ____ Mg(NO3)2 + ____ H2 2)If I start this reaction with 40. grams of magnesium and an excess of nitric acid, how many grams of hydrogen gas will I produce? 3)If 1.70 grams of hydrogen is actually produced, what was my percent yield of hydrogen? 4)Balance this equation (show all work): ____ NaHCO3  ____ NaOH + ____ CO2 5) If 25.0 grams of carbon dioxide gas is produced in this reaction, how many grams of sodium hydroxide should be produced? 6) If 50.0 grams of sodium hydroxide are actually produced, what was my percent yield?