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the relative humidity is 50% ,,if air contains about____________ g of water water vapour at 40 deg C a)2.55 b)25.5 c)2.55 kg d)25.5 kg HOW TO CALCULATE THIS????

the relative humidity is 50% ,,if air contains about____________ g of water water vapour at 40 deg C


a)2.55


b)25.5


c)2.55 kg


d)25.5 kg


HOW TO CALCULATE THIS????

Grade:9

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