Stoichiometry Review - Honors Chemistry

4. Calculate the percent yield when 24.8 g of propane (C3H8) combusts with 95.2 g of oxygen toproduce 15.0 g of water vapor. (37.0%)5. Calculate the actual amount of magnesium oxide which can be produced when 40.0 g ofcarbon dioxide reacts with 42.8 g of magnesium metal. The percent yield for this reaction is81.7%. (57.9 g MgO)Just to irritate you…Classify each of these statements as always true (AT), sometimes true (ST), or never true (NT)._____ 6. The coefficients in a balanced chemical equation can be used to form mole ratiosrelating reactants to products._____ 7. Because mole ratios from balanced equations are exact numbers, they do not enter intothe determination of significant figures._____ 8. If done correctly in lab, the actual yield in a chemical reaction will be equal to or lessthan the theoretical yield._____ 9. We determine the actual yield of a chemical reaction by using stoichiometry._____10. We can determine the amount of excess reactant remaining from the amount ofproduct formed.