I think so. The CO2 cartridge could also be used for propulsion
Yes, your balance would not be affected on the moon.
A spring balance would work on the moon but would first have to be re-calibrated for the moons lower gravity.
yes
A hot air balloon would not work on the moon.
yes unless you're on the darkside on the moon
Yes
A solar powered heating unit may or may not work on the moon
Yes, solar power reaches the moon.
Yes, i pretty shure it would
Yes it would only if we could try it.
It would work it if is calibrated to account for the lower gravity on the Moon.
Yes it would if it was solar powered car.