Question: A classroom measures 30 m by 10 m and is 3 m in height. If the temperature is 20 8C and the humidity is 60%,

A classroom measures 30 m by 10 m and is 3 m in height. If the temperature is 20 8C and the humidity is 60%, the amount of water in the air is nearest:
(A) 6.9 kg
(B) 7.1 kg
(C) 8.7 kg
(D) 9.4 kg

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