00:04
So we have our following mole percentages, and 2 is equal to 74 .8%.
00:11
02 is equal to 15 .3%, co2 is equal to 3 .7%.
00:18
And lastly, h20 is equal to 6 .2%.
00:22
All right, so our partial pressures is equal to the total pressure times our mole fractions, and we have our mole fractions of each of our molecules.
00:33
Those are just the mole percent.
00:35
So the pressure of n2 is equal to our total pressure, which is 0 .98 times our percentage, 0 .748, which gives us 0 .733 atm.
00:50
The pressure of 0 .2, we do the same thing, 0 .98 times 0 .15 .3 gives me 0 .15 atm.
00:59
The pressure of co2 is equal to 0 .98 times 0 .037, which is equal to 0 .037.
01:07
And the pressure of h2o is equal to 0 .98 times 0 .062 which is equal to 0 .061.
01:20
Okay so these are our partial pressures and now for part b we're asked if the volume of the exhaled gas is 455 milliliters and the temperature is 37 celsius calculate number of moles of co2 exhaled.
01:42
So we have our volume, which was 455 milliliters...