A balloon contains gas at a pressure 1.2 atm (1 atm = 101.3 kPa)and has a volume of 0.10m³.More gas is pumped into the balloon at constant pressure until the volume is doubled.How much work is done by the pump?

Question

Quizplus · Accepted Answer

We can use the formula for work done at a constant pressure:
W = PΔV
Where P is the constant pressure, and ΔV is the change in volume.
Initially, the volume is 0.10m³. To double the volume, we need to add another 0.10m³ of gas:
ΔV = 0.10m³
The pressure is given as 1.2 atm, which we convert to kPa:
P = 1.2 atm x 101.3 kPa/atm = 121.56 kPa
Putting these values into the formula, we get:
W = (121.56 kPa)(0.10m³)
W = 12.156 kJ

Rounding to the nearest whole number gives us 12 kJ, which is answer choice D.

A Balloon Contains Gas at a Pressure 1