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28 January, 07:15

If I have 17 liters of gas at 67C and 88.89 atm, what will be the pressure of the gas if I raise the temperature to 94C and decrease the volume to 12 liters?

A. 140 atm

B. 180 atm

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  1. 28 January, 07:21
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    The correct answer is A. 140 atm

    Explanation:

    We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T. We convert the unit Celsius into Kelvin:

    0 ° C = 273K, 67 ° C = 273 + 67 = 340K; 94 ° C = 273 + 94 = 367K

    P1xV1 / T1 = P2x V2/T2

    P2 = ((P1xV1 / T1) xT2) / V2

    P2 = ((88,89atm x 17L/340K) x367K) / 12L = 135,927625 atm
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