Ok the ML (the 3rd number) is not legit because the ML value can only be from -L to L (the second value)
Heating up, mostly. Solid can be heated to liquid, then to gas, then eventually to plasma.
I think the answer for this is 4702.5 J/g*k Depending on if it is water as a solid liquid or gas. I used water as a liquid when I solved it. J=(75g)(4.18 J/g*k)(15K)
An increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.