On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air

Source: JAMB · 2023

On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air is 38.8 mmHg. What is the relative humidity?

Temp. (°C) 15 20 25 30 40 50
s.v.p of H2O (mmHg) 12.8 17.5 23.8 31.8 55.3 92.5

On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air is 38.8 mmHg. What is the relative humidity?

Temp. (°C) 15 20 25 30 40 50
s.v.p of H2O (mmHg) 12.8 17.5 23.8 31.8 55.3 92.5
  1. 42%
  2. 80%
  3. 70% ✓
  4. 62%

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