5.16 understand that the Kelvin temperature of the gas is proportional to the average kinetic energy of its molecules
1. The variable that remained constant is the number of moles of gas particles in the container/mass of gas particles
2. The gas particles collide with the walls of the container which is how they create pressure. So if you increase the temperature, the average kinetic energy of the particles increases, so they collide with the walls more frequently and with more force
3. No the temperature is not proportional to the average speed
4. Yes, temperature is proportional to KE because the line goes through the origin.
NB, mass of particles is constant so it won’t affect the shape of the graph only the gradient
5. The particles in the container don’t move at the same speed, so we take an average and call it “Average kinetic energy”
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