Stoichiometry Review - Honors Chemistry

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Stoichiometry Review - Honors Chemistry

Honors ChemistryHW: Stoichiometry ReviewName ____________________________________1. Carbon dioxide is produced in the reaction between calcium carbonate and hydrochloricacid. (hint: in this double displacement reaction, the acid product will dissociate into waterand a gas)A) How many grams of calcium carbonate will be needed to react completely with 15.0grams of hydrochloric acid? (20.6 g CaCO3)B) How many grams of carbon dioxide would be produced in the reaction? (9.04 g CO2)C) How many grams of calcium chloride would be formed? (22.6 g CaCl2)2. What mass of silver can be produced from 3.00 mol of copper and 3.85 mol of silver nitrate?(324 g Ag)3. Calculate the mass of water produced when 2.75 x 10 22 molecules of oxygen gas react with4.20 x 10 22 molecules of hydrogen gas. (1.26g H2O)


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.

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