Question

a gas of unknown volume was kept at 107°. when the temperature is decreased by 35°C, the gas occupies a volume of 750 ml.what was the initial volume the gas.​

Answer 1

Given - Final volume - 750 ml

Initial temperature - 107° C

Final temperature - 72°C

Find - Initial volume

Solution - Initial volume can be calculated by the help of Charles' law. The formula for calculation is - V1/T1 = V2/T2

In the formula, V1 is initial volume, T1 is initial temperature, V2 is final volume and T2 is final temperature.

Keeping the values in equation-

V1 - V2/T2*T1

V1 - 750/72*107

V1 - 1115 ml.

Hence, initial volume is 1115 ml.