00:01
So to solve for this, you are to calculate first the mole fraction of nitrogen gas.
00:07
So that's number of moles of nitrogen gas and then divided by the total number of moles of the mixture.
00:14
So that means number of moles of n -2 plus the number of molecules of carbon dioxide co2.
00:23
Okay, so we'll substitute it right here.
00:25
We know that the mass of nitrogen gas is 10 grams.
00:28
And then convert this to most by dividing the molar mass of nitrogen.
00:31
Gas that's 28 .02 grams per mole okay divided by the i'll again number of moles of n2 i'll just copy the numerator 10 divided by 28 .02 this is all of n2 and then for co2 we have 10 grams also divided by the molar mass of carbon dioxide is 44 .0 grams per mole okay solving for this we'll get the whole fraction of n2 that's 0 .611.
01:03
All right.
01:05
And now to solve for the partial pressure of nitrogen gas, that's equivalent to the mold fraction of nitrogen gas multiplied by the total pressure.
01:20
Okay, so we have calculated the bulk fraction that's 0 .611 for nitrogen gas.
01:26
And then we multiplied the total pressure, which is given in the problem, that's 1 .88.
01:31
Okay, so you'll get 1 .15.
01:34
The unit for this is atm...