The pressure of a gas sample is measured using a closed manometer. If the mercury level is 76 mm Hg lower in the arm connected to the gas sample and the atmospheric pressure is 750 mm Hg, what is the pressure of the gas sample?
110 kPa
100 kPa
10.1 kPa
89.8 kPa
Chemistry?
2018-08-24 7:19 am
回答 (1)
2018-08-24 9:08 am
✔ 最佳答案
As the mercury level is lower in the arm connected to the gas sample, the gas sample has a higher pressure.Pressure of the gas sample
= (750 mmHg) + (76 mmHg)
= 826 mmHg
= (826 mmHg) × (101.3 kPa / 760 mmHg)
= 110 kPa
The answer: 110 kPa
收錄日期: 2021-04-24 01:13:40
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