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22 February, 22:51

A sample of helium gas has a volume of 2.0 L at a pressure of 4.0 atm. What is the volume of gas at 380 mmHg

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  1. 23 February, 01:39
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    From equation;

    P1V1=P2V2

    V2=P1V1:P2

    since P2=380mmHg

    now; 1atm=760mmHg

    how about 380mmHg is equal to how many atm?

    380*1:760=0.5atm

    P2 now is equal to 0.5atm

    back from equation;

    P1V1=P2V2

    V2=P1V1:P2

    V2=4.0atm*2.0L:0.5atm

    V2=16L

    therefore V2=16L.
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