The pressure on a gas at -73 o C is doubled, butits volume is held constant. Wha

Question

The pressure on a gas at -73oC is doubled, butits volume is held constant. What will the final temperature be indegrees Celsius? This question is not giving me the pressure . . . and I don'tknow if there is a standard pressure . . . I know I have to findthe second temperature, but should I change it into Kalvin and thenchange it back to Celsius? I don't know what to do. The pressure on a gas at -73oC is doubled, butits volume is held constant. What will the final temperature be indegrees Celsius? This question is not giving me the pressure . . . and I don'tknow if there is a standard pressure . . . I know I have to findthe second temperature, but should I change it into Kalvin and thenchange it back to Celsius? I don't know what to do. This question is not giving me the pressure . . . and I don'tknow if there is a standard pressure . . . I know I have to findthe second temperature, but should I change it into Kalvin and thenchange it back to Celsius? I don't know what to do.

Explanation / Answer

   Let pressure, P1 = P atm Temperature, T1 = -73 C = 200 K Pressure is doubled, so pressure, P2 = 2P atm Temperature , T2 = ?    P1 / T1 = P2 / T2 So final temperature, T2 = 2P * 200 K / P                                     = 400 K So final temperatue in celsius = 127 C. Note that P gets cancelled.

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