9. Solving a chemistry problem
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9. Solving a chemistry problem
3. 250 ml of 20.4% hydrochloric acid acted on 10 g of iron (p = 1.10). What substance was formed in solution and what is its mass in pure form? What volume of hydrogen at 20 C and 100 kPa is released from the solution? What substance - iron or hydrochloric acid was taken in excess and what is the mass of the excess of this substance?
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