Jason took 6 hours to travel 540 km. For the first 140 km, he took 2 hours. What was his average speed during the first two hours? ___ km/h
How much distance did he cover in the last four hours of his journey? ___ km
What was his average speed for the rest of the journey? ___ km/h

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

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is there multiple choice answers?

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.