(PLEASE HELP 20 POINTS) 4.2 moles of an unknown gas at a pressure of 5.5 atm has a volume of 12.0 L. What is the temperatu

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(PLEASE HELP 20 POINTS)

4.2 moles of an unknown gas at a pressure of 5.5 atm has a volume of 12.0 L.
What is the temperature?

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Ngọc Khuê 4 years 2021-07-23T09:05:39+00:00 1 Answers 12 views 0

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  1. ThanhThu
    0
    2021-07-23T09:06:49+00:00
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    Answer: The temperature of the unknown gas is 191.4 K.

    Explanation:

    To calculate the temperature of the gas, we use ideal gas equation which is given as:

    PV=nRT       …….(1)

    Where

    P = pressure of the gas = 5.5 atm

    V = volume of gas = 12.0 L

    n = number of moles = 4.2 moles

    R = Gas constant = 0.0821 L.atm/mol.K

    T = temperature of the gas = ?

    Putting values in equation 1:

    5.5atm\times 12.0L=4.2mol\times 0.0821L.atm/mol.K\times T\\\\T=\frac{5.5atm\times 12.0L}{4.2mol\times 0.0821L.atm/mol.K}\\\\T=191.4K

    Hence, the temperature of the unknown gas is 191.4 K.

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