IOM 2016, Блиц — Задача 46

Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.

Условие

Mixture of calcium sulfate hemihydrate CaSO$_4$·0.5H$_2$O and water is used in medicine to make plaster splints. Mixture hardens resulting in CaSO$_4$·2H$_2$O formation. What volume (mL) of water must be added to 290 g of calcium sulfate hemihydrate to harden all its amount? (Molar mass of CaSO$_4$ is 136 g/mol). Give the integer answer without units.

Решение

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Оригинал в Архива: blitz.pdf