At the top of the mountain, the thermometer reads 0∘C and the barometer reads 710 mmHg. At the bottom of the mountain the temperature is 30∘C and the pressure is 760 mmHg. The ratio of the density of air at the top with that at the bottom is:
A
1:1
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B
1.04: 1
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C
1:1.04
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D
1:1.5
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Solution
The correct option is B 1.04: 1 PV=nRT=wmRT P=dRTm d∝PT d(top)dbottom=710273×303760=1.04:1