1. The problem statement, all variables and given/known data I feel like I'm doing something seriously wrong here.:uhh: How tall must a column of water be to generate a pressure of 100mmHg? 2. Relevant equations P = pgh, I think, is the only necessary equation. 3. The attempt at a solution So..... 100mmHg = 1 kg/m3 * 9.81 m/s2 * 1mmHg/133.322Pa * h h = 1.36 km? Seems a bit much, don't ya think?