The pressure of a gas is 440. mm Hg. Express this in units of (a) atmospheres, (b) bars, and (c) pascals.

Question

The pressure of a gas is 440. mm Hg. Express this in units of (a) atmospheres, (b) bars, and (c) pascals.

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Tryphena 3 years 2021-09-03T19:01:19+00:00 1 Answers 25 views 0

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    2021-09-03T19:02:39+00:00

    Answer: a) 0.579 atm

    b) 0.585 bar

    c) 58662 Pa

    Explanation:

    Pressure of the gas is defined as the force exerted by the particles on the walls of the container. It is expressed in various terms like ‘mmHg’, ‘atm’, ‘kiloPascals’ etc..

    All these units of pressure are inter convertible.

    We are given:

    Pressure of the gas = 440 mmHg

    a) Converting this unit of pressure into ‘atm’ by using conversion factor:

    760mmHg=1atm

    440mmHg=\frac{1}{760}\times 440=0.579atm

    b) Converting this unit of pressure into ‘bars’ by using conversion factor:

    760mmHg=1.01bar

    440mmHg=\frac{1.01}{760}\times 440=0.585bar

    c) Converting this unit of pressure into ‘Pascal’ by using conversion factor:

    760mmHg=101325Pa

    440mmHg=\frac{101325}{760}\times 440=58662Pa

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