You want to cool a storage cylinder containing 10 moles of compressed gas from 30oc to 20oc. For which kind of gas would this be easiest?.

According to my knowledge of “swimming on land” is physically impossible, unless it’s a incredibly soft or not dense land there might be a possibility but even if the criteria was met the chance to swim on land are very slim or close to impossible.

Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x