posted by alex .
How many grams of water vapor (H2O) are in a 10.2 liter sample at 0.98 atmospheres and 26°C? Show all work used to solve this problem.
Look up the vapor pressure of H2O at 26 C and plug that into P in PV = nRT and solve for n = number of moles. Then n = grams/molar mass, solve for grams.