At 96° F the saturation density of air is 0.04 kg/m³.If the weather report says the relative humidity is 90 % when the temperature is 96°F,the humidity is A)10 %. B)0.9. C)0.004 kg/m³. D)0.036 kg/m³. E)0.04 kg/m³.

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Quizplus · Accepted Answer

The saturation density of air at 96°F is given as 0.04 kg/m3. When the weather report says the relative humidity is 90%, it means the air contains 90% of the water vapor it can hold at that temperature. Since the saturated density of air at that temperature is 0.04 kg/m3, the density of water vapor in the air is 90% of 0.04 kg/m3, which is 0.036 kg/m3. Therefore, the humidity is 0.036 kg/m3, which is option D.

At 96° F the Saturation Density of Air Is 0