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Quiz 1 solution

# Quiz 1 solution - the density is a factor of 0.0957 lower...

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Quiz 1 solution P = density x h x g, where the density is 1.3 g/cm 3 , h is the height (=35 mm) and g = 9.8 m/s 2 So, P= 1.3 x 10 3 kg/m 3 x .035 m x 9.8 m/s 2 = 445.9 Pa Convert to atmospheres 1 atm = 101325 Pa P = 4.4x 10 -3 atm OR Use the fact that the density is 1.3g/cm 3 compared to 13.59g/cm 3 in the case of mercury. Thus
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Unformatted text preview: the density is a factor of 0.0957 lower than in the case of mercury. The pressure is therefore also a factor of 0.0957 lower than if this were a mercury manometer. So the pressure is 35 torr x 0.0957 = 3.35 Torr. 760 torr = 1 atm. So the pressure is P = 3.35/760 = 4.4 x 10-3 atm, as before....
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