Answer to Question #239928 in Physics for Jawairia

Question

The temperature of the helium in the balloon was increased. The mass and volume of the helium in the balloon remained constant. Explain why the pressure exerted by the helium inside the balloon would increase. [4 marks]

Answer 1

According to ideal gas law:

$$PV=\frac m{\Mu}RT.$$

Here we have:

m - mass (constant)

M - molar mass (constant)

R - gas constant

T - temperature (increased)

V - volume (constant)

As we see, the only variable above is the temperature, it increased. Therefore, to increase the magnitude of the left part of the equation, pressure P must increase as well.