A cylinder contains 26.5 L of oxygen gas at a pressure of 1.7 atm and a temperature of 280 K. How much gas (in moles) is in the cylinder?

Question

A cylinder contains 26.5 L of oxygen gas at a pressure of 1.7 atm and a temperature of 280 K. How much gas (in moles) is in the cylinder?

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Thạch Thảo 4 years 2021-07-12T00:49:19+00:00 1 Answers 25 views 0

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  1. kiet
    0
    2021-07-12T00:50:28+00:00
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    Answer:

    The appropriate answer is “1.96 mol“.

    Explanation:

    The given values are:

    Volume,

    V = 26.5 L

    Pressure,

    P = 1.7 atm

    Temperature,

    T = 280 K

    Now,

    The number of moles (n) will be:

    = \frac{PV}{RT}

    By substituting the values, we get

    = \frac{1.7\times 26.5}{0.0821\times 280}

    = \frac{45.05}{22.988}

    = 1.96 \ mol

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