### Four Stoichiometry Problems: Mole-Mole, Mass-Mass,chemistry homework help

What mass of barium hydroxide is necessary to react with 253 g of phosphoric acid (H3PO4) according to the following balanced chemical equation?

2 H3PO4 + 3 Ba(OH)2 = Ba3(PO4)2 + 6 H2O

What volume of carbon dioxide (CO2) gets produced when 8.0 L of octane (C8H18) react with excess oxygen according to the following balanced chemical equation?

2 H3PO4 + 3 Ba(OH)2 = Ba3(PO4)2 + 6 H2O

How many moles of oxygen are necessary to completely react with propane (C3H8) to produce 16.3 mol of water according to the following balanced chemical equation?

C3H8 + 5 O2 = 3 CO2 + 4 H2O

The reaction between solid sodium and iron (III) oxide is one in a series of reactions that inflates an automobile airbag. 6 Na (s) + Fe2O3 (s) = 3 Na2O (s) + 2 Fe (s). If 100.0 g of Na and 100.0 g of Fe2O3 are used in this reaction, determine:

a. The limiting reactant

b. The maximum amount of solid iron (Fe) that could get produced

c. If 48.0 g of iron are actually produced, what is the percent yield for iron in this reaction?

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