Honors Chemistry 2017-2018 WS 8.6 Stoichiometry Review 1. Consider the reaction: Mg + HCl MgCl2 + H2   a. How many moles of hydrogen gas can be produced if 5.5 moles of hydrochloric acid is provided (assuming an excess of magnesium)? (2.8) b. If 20.0 grams of magnesium reacts with hydrochloric acid, how many grams of magnesium chloride are produced? (78.4) c. If 2.5 of hydrochloric acid is provided, how many grams of hydrogen gas can be produced? (2.5) d. How much magnesium must be present to produce 100 grams of magnesium chloride? (25.5) 2. Consider the reaction: _ NaI + Cl2 NaCl + I2  a. How many grams of chlorine gas must be reacted with sodium iodide if 10.0 grams of sodium chloride are needed? (6.07) b. What is the limiting reactant if 150 grams of sodium iodide is combined with 2 moles of chlorine gas? c. the information from #2b, calculate what mass of sodium chloride can be produced. (58.5) 3. Write a balanced equation for the combustion of methane (CH4) a. If 3.7 moles of CH4 are combined with 8 moles of oxygen gas, how many moles of carbon dioxide are produced? (3.7) b. How many moles of water are produced if 2.5 moles of carbon dioxide are produced? (5.0) c. Calculate the mass of water produced if 125.0 grams of oxygen are consumed. (70.31) 101
Honors Chemistry 2017-2018 WS 8.6 Stoichiometry Review 1. Consider the reaction: Mg + HCl   MgCl2 + H2 a. How many moles of hydrogen gas can be produced if 5.5 moles of hydrochloric acid is provided (assuming an excess of magnesium)? (2.8) b. If 20.0 grams of magnesium reacts with hydrochloric acid, how many grams of magnesium chloride are produced? (78.4) c. If 2.5 of hydrochloric acid is provided, how many grams of hydrogen gas can be produced? (2.5) d. How much magnesium must be present to produce 100 grams of magnesium chloride? (25.5) 2. Consider the reaction: _ NaI + Cl2  NaCl + I2 a. How many grams of chlorine gas must be reacted with sodium iodide if 10.0 grams of sodium chloride are needed? (6.07) b. What is the limiting reactant if 150 grams of sodium iodide is combined with 2 moles of chlorine gas? c. the information from #2b, calculate what mass of sodium chloride can be produced. (58.5) 3. Write a balanced equation for the combustion of methane (CH4) a. If 3.7 moles of CH4 are combined with 8 moles of oxygen gas, how many moles of carbon dioxide are produced? (3.7) b. How many moles of water are produced if 2.5 moles of carbon dioxide are produced? (5.0) c. Calculate the mass of water produced if 125.0 grams of oxygen are consumed. (70.31) 101