The table shows the pressures of saturated water vapor (pw) and organic substances (p) at normal total pressure and temperature ϑ °C indicated in the table. These organic substances practically do not mix with water in the liquid phase. Calculate for your room number the mass of organic matter that distills from 1 kg of water vapor at the indicated temperature.

ϑ °С pw, kPa substance p, kPa
95.0 84.50 naphthalene C10H8 2.06

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