Physics

Gas is confined in a tank at a pressure of 11 ATM and a temperature of 25 degree Celsius. If 2/3 of the gas is withdrawn and the temperature is raised to 75 degree Celsius, what is the new pressure in the tank?

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  1. P V = n R T

    11 = (n R/V) 298
    so n R/V = 11/298

    later
    P V = (n/3) R T
    3 P V = n R 348
    so
    n R/V = 3 P/348
    but n R / V is still 11/298
    so
    (11/298)(348/3) = P

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