00:01
All right, so we have this can of soda that lost co2.
00:07
So the first steps to find how much co2 was lost.
00:11
We have mass, converted that to moles, okay, and then find the concentration of co2 in that soda.
00:19
Having the concentration, we can actually compute the pressure by using hair as well.
00:26
So the concentration of a gas in a liquid is equals the constant, henry's constant times the pressure.
00:36
Okay, so if we have the concentration and we will give we we have this constant from the question, we can compute pressure.
00:45
So that's how you go about this question.
00:48
All right.
00:48
So let's go.
00:51
First step, we will take the difference.
00:56
So we started with this mass on the can.
01:00
And at the end we had this mass.
01:04
Okay, so you just take the difference, which is 2 .2 grams, and that's co2, right? that escaped from the can.
01:12
All right, so this mass of co2 will convert that to mole using the molar mass.
01:19
Just divide by the molar mass right here, and you have, and you get the number of moles, 0 .05 mole.
01:28
Now, let's find the concentration.
01:31
The concentration, which is really the molality, sorry, the molarity in this case, is the number of moles divided by the volume, which is also given in the question.
01:48
This is the volume.
01:49
However, we want that in liters...