In an atmospheric pressure of 747 torr, an open manometer showed the mercury in the arm connected to a cylinder of carbon dioxide gas to be 126 mm Hg higher than the other arm. What is the pressure in the gas cylinder?
747 torr
873 torr
621 torr
126 torr
Please Help?
2018-08-24 7:18 am
回答 (1)
2018-08-24 9:18 am
✔ 最佳答案
As the mercury in the arm connected to the cylinder of carbon dioxide is higher, the pressure of carbon dioxide is lower than atmospheric pressure.Pressure of the gas cylinder
= (747 torr) - (126 mmHg) × (1 torr/mmHg)
= (747 torr) - (126 torr)
= 621 torr
收錄日期: 2021-05-01 22:28:04
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