A certain volume of a gas is kept at 77°C. When temperature is decreased by 20°C the gas occupies a volume of 900ml. What was the initial volume of gas (Pressure constant)
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Answer:
Likewise, decreasing the pressure of the gas will cause its volume to increase. So right from the start you can say that since the pressure of the gas is increased, the volume will decrease, which in turn will cause the density of the gas to increase, since now you have the same mass of gas in a smaller volume.
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As we know
Pv=mrt
P, m and r are constants
So
V1/T1 = V2/T2
V1=V2xT1/T2
V1=900x350.15/293.15
Initial volume(v1) =1074.99ml
Apporx =1075ml
Explanation:
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