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Calcium carbide, CaC2, can be produced in an electric furnace by strongly heating calcium oxide (lime) with carbon. The unbalanced equation is
CaO(s) + C(s) ¨ CaC2(s) + CO(g)
Calcium carbide is useful because it reacts readily with water to form the flammable gas acetylene, C2H2, which is used extensively in the welding industry. The unbalanced equation is
CaC2(s) + H2O(l) ¨ C2H2(g) + Ca(OH)2(s)
What mass of acetylene gas, C2H2, would be produced by complete reaction of 4.34 g of calcium carbide?

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