Homework Help: physics

Posted by sand on Monday, February 27, 2012 at 12:46am.

The temperature in a room is kept at a constant 20 °C but the humidity is only 20%. If the room has a volume of 30mł, and the room’s door and windows closed, how many kilograms of water must be put into the vaporizer to increase the humidity from 20% to 85% ( the molecular weight of water is 18)

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