1. The problem statement, all variables and given/known data I'm dealing with densities of liquids. When using the formula P = Patm + ϱgh, where ϱ is the density of the liquid, what should the units of ϱ be? 2. Relevant equations 3. The attempt at a solution I have P in kPa, so just looking at the units gives: kPa = kPa + (?)(m/s2)(m) --> kPa = (?)(m2/s2) Which would mean the units of ϱ are (kPa)(s2 / m2). Somehow that seems wrong... I thought ϱ was supposed to have units of mass per volume?