65. Solving a chemistry problem
659. A mixture of iron and zinc, the mass of iron in which is 5.6 g, is treated with hydrochloric acid (ρ = 1.1 g / cm3) with a mass fraction of HCl. twenty%. What is the mass of this mixture if a gas with a volume of 13.44 liters (n.o.) is released? What volume of acid was used in this case?
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