Question

How would the volume of an `18*g` mass of water change if its temperature changed by over `100` `""^@C`?

Answer 1

Well, there is a PHASE CHANGE associated with your question......

Explanation:

`18*g` clearly constitutes a mole of water. However, the water can be condensed or in the gaseous phase. Water is quite involatile, and `18*g` of ice or water indeed contains a molar quantity of `OH_2` molecules, i.e. `2xxN_A` `H` atoms, and `N_A` `O` atoms; `18*g` in total.

At normal pressures, if we heat the water up over `100` `""^@C`, a phase change occurs, and the water enters the gaseous phase. And `18*g` of GASEOUS water would indeed occupy `22.4*L`....of course the temperature of the gas phase would also change the volume.