Posted by **Anonymous** on Thursday, April 16, 2009 at 12:09am.

A McLeod gauge measures low gas pressures by compressing a known volume of the gas at constant temperature. If 315 cm^3 of gas is compressed to a volume of 0.0457 cm^3 under a pressure of 2.51 kPa what was the original gas pressure?

- Chemistry -
**DrBob222**, Thursday, April 16, 2009 at 12:43am
P1V1 = P2V2.

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