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17 April, 08:08

What is the volume occupied by 4.20 miles of oxygen gas (O2) at STP

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  1. 17 April, 10:29
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    Answer: 94.13 L

    Explanation: In STP in an ideal gas there is a standard value for both temperature and pressure. At STP, pressure is equal to 1atm and the temperature at 0°C is equal to 273.15K. This problem is an ideal gas so we use PV=nRT where R is a constant R = 0.08205 L. atm/mol. K.

    To find volume, derive the equation, it becomes V=nRT/P. Substitute the values. V = 4.20 mol (0.08205L. atm/mol. K) (273.15K) / 1 atm = 94.13 L. The mole units, atm and K will be cancelled out and L will be the remaining unit which is for volume.
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