Context of the question: I was reading on hydrogen bonds, specifically how close they are to the thermal energy of the fluids. So I googled the value of thermal energy at room temperature, which was $\pu{2.5 kJ/mol}$. Which is a difference of $10$ order of magnitude (H bonds are $\pu{23 kJ/mol}$), which makes sense to me given the time taken to break ($1$ to $\pu{20 ps}$) and reform a bond ($\pu{0.1 ps}$). That is how the question I posed in the title arised.
Since sea water can retain heat for longer periods of time, and they release it more slowly as well – what is the difference between thermal energy at ambient room temperature for gas (atmosphere) vs fluids (water), and how does this change with volume?