An inexpensive reactant is often used in excess so that the valuable reactant is completely consumed.
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50. In the reaction 2AgNO₃ + Cu → Cu(NO₃)₂ + 2Ag, 34 g of AgNO₃ and 6.35 g of Cu are mixed. The mass of silver produced is
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52. In the reaction 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂, 18 g of Al and 196 g of H₂SO₄ are mixed. The volume of H₂ at STP is (Al = 27, S = 32, O = 16)
