75 Решение задачки по химии №07 516

A.11. When processing 100 g of a technical sample of calcium carbide with water, 30 liters of acetylene C2H2 were obtained. The volume of gas is measured at a temperature of 50 C and a pressure of 106 kPa.
Determine the mass fraction of chemically pure calcium carbide CaC2 in the sample.

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