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11 July, 19:24

A pressure cooker contains 0.355 mole of air, which occupies a volume of 5.68 liters. The temperature inside the pressure cooker is 394 K. What is the absolute pressure of the air in the pressure cooker? The pressure of the air is_ pascals. Express you answer to three significant figures.

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  1. 11 July, 19:36
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    We will use ideal gas equation in this problem

    PV = nRT

    Where

    P = pressure of gas or air = ?

    V = volume of air = volume of pressure cooker = 5.68 L

    T = temperature = 394 K

    n = moles of air = 0.355

    R = ideal gas equation = 0.0821 L atm / mol K

    Putting values

    Pressure = nRT / V = 0.355 X 0.0821 X 394 / 5.68 = 2.02 atm.
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