Solved 2.55 moles of water undergoes the transition H2O(1, Chegg.com For water at 100^(@)C and 1 bar, Delta_(vap) H Delta_(vap)U = _______ xx 10^(2) J mol^( 1). (R Given the phase diagram of water below, what are the values of its critical temperature and critical pressure? Also, at 0 degrees C, what kind of phase changes would occur as the Specific heat, heat of vaporization, and density of water (article) Khan Academy