00:01
So here we need to use two separate gases at different pressures, and these are liquid bromine and air, and they become mixed.
00:08
So to describe how the pressures of the two gases combined, we need to think about dalton's law of partial pressures.
00:16
And so the pressure total is equal to the sum of all the pressures, pa, add pb, add pc, and so on and so forth.
00:27
And so if we apply this to our problem, we have p total is equal to p of bromine, add p of air.
00:44
And so what we can do is plug in these values where we have 775 at 168.
00:49
We get 9 .4 .3 tour.
00:55
So the total pressure after bromine is added to the flask is 9 .43 tour.
01:00
And so next what we know is that the volume of the container is decreased to one half of the original volume...