If the temperature of air whose relative humitity is 60% falls 20^(@) to 5^(@)C calculate the fraction of the mass of water vapour contained in the air which will condense into drops. (Saturated vapour pressure of water at 20^(@)C=17.5mm and at 5^(@)C=6.5mm)

If the temperature of air whose relative humitity is 60% falls 20^(@)

1.	If the temperature of air whose relative humitity is 60% falls 20^(@) to 5^(@)C calculate the fraction of the mass of water vapour contained in the air which will condense into drops. (Saturated vapour pressure of water at 20^(@)C=17.5mm and at 5^(@)C=6.5mm)
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