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A gas occupies 40.0 mL at 127 degrees Celsius. What volume will it occupy at-73 degrees...

A gas occupies 40.0 mL at 127 degrees Celsius. What volume will it occupy at-73 degrees celsius? (Assume pressure and number of particles is constant.)

A)23.0 ml
B)8.80 ml
C) 79.2ml
D)20.0ml
E) None

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Answer #1

According to Charles' Law the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature.

V T {T(K) = T(°C) + 273.15.,1270C = 400K , -73 oC = 200K}

V1.T2 = V2 .T1

40 x 200 = V2 x 400

V2 = 20ml

ans: D) 20.0ml

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