IOM 2019, Блиц — Задача 51

OLYMPIAD OF METROPOLISES, Moscow, September 2, 2019 · 2 септември 2019 г.

Условие

At 323 K, the vapor pressure of 200 g of ethanol containing 23.0 g of a nonvolatile solute is $2.76 \cdot 10^4$ Pa. At the same temperature, the vapor pressure of pure ethanol is $2.93 \cdot 10^4$ Pa. Assuming the ideal solution, find the molecular mass of the solute (in g/mol). Round the answer to the nearest integer and give it without units.

Решение

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Оригинал в Архива: blitz-en-all-task-final.pdf