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Q1.
The photograph below shows a balloon filled with helium gas.
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.
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(4)
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The particles would have a higher mean kinetic energy.
So, there would be more collisions with the walls of the balloon every second.
The particles hit the walls with greater force during each collision.
A greater force is applied to the same area,
so this results in an increase in pressure.
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