З18. Barometric pressure p depends on the altitude h above sea level according to Boltzmann's law
p=р0exp(-Mgh/RT)
where po is the pressure at zero level (normal pressure), M is the average molar
mass of air (29.0*10-3 kg/mol). Combining this equation with the Clausius-Clapeyron equation, calculate the boiling point of water at the top of Mount Elbrus (5.642 km above sea level), knowing the heat of evaporation of 40.67 kJ/mol. (Take the air temperature in the Boltzmann equation equal to 20 C)

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