00:02
The total pressure after the third gas is being added with no change to the volume of temperature.
00:08
So we know that we want to calculate the initial pressure.
00:13
So initial pressure will be gas a and b.
00:26
So then the number is going to be 0 .304 atm plus 0 .661 atm.
00:39
So before the addition of the third, the initial pressure is 0 .965 anti -atm.
00:49
Then calculate the pressure contribute by c using ideal gas law.
00:55
We know that pc, let's just say, ideal gas law is pv equals nrt.
01:07
But now we want to just know the pc.
01:10
So p equals n r t divided by b.
01:19
So n is the number of more gas, c, r is the ideal gas constant 0 .821.
01:26
T is the temperature in calvin, 29 degrees plus the kelvin constant to 273 .15.
01:35
And we know that volume is still 7 .2 liter.
01:39
So let's calculate p c...