[futurebrewer]

hey all. I am doing this lab and I am stuck on a problem. The question is this:

Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases. The component gas in the cylinder are air (a mixture itself) and water vapor. The partial pressure of the air is known from question #4. use this data to calculate the vapor pressure of water at each temperature.

for question #4 I have a ton of values. I just pick one so we can make it easier.

(2.31 x 10^-4 mol)(.0821 J/mol*K)(277.55 K)/(.0052 L)=1.012 atm

ok so how can I use that info from #4 and calculate the vapor pressure? I would really appreciate any help. I am really stumped and of course waited until the last minute to finish this!