Answer to Question #283199 in Physics for leg.end

Question

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

Answer 1

As we know, kinetic energy (of speed) of molecules depends on the temperature: higher temperature means faster chaotic motion of molecules. Heating the gas, we increase the speed of its molecules. Faster molecules hit the walls of the vessel more intensely.

And pressure is the average force the molecules exert on the walls of the vessel.