00:01
And this is a question about a balloon.
00:06
No more than 2 .5 liters.
00:07
Max volume is equal to 2 .5 liters.
00:20
It's filled with 2 .0 liters of helium at 1 .00 atm.
00:34
Rises to atmospheric pressure, rises to altitude with p equals 500 .0 mmhg.
00:58
Assume temperature constant, which of course it wouldn't be.
01:07
But let's go ahead and convert 500 .0 mmhg to atmospheres.
01:26
And this will equal 500 divided by 760 is 0 .6579 atm.
01:37
So we're going to use p1v1 equals p2v2.
01:46
And v2 will be equal to p1v1 over p2.
01:52
This is p2.
01:54
This is v1.
01:59
This maximum volume.
02:02
And this is p1.
02:04
So v2 will equal p1 times v1 divided by p2.
02:22
2 divided by 0 .6579.
02:25
That'll be 3 .0 liters.
02:40
Balloon will burst because 3 .0 liters is greater than 2 .5 liter maximum.
02:57
Second question.
03:02
We've got another balloon.
03:10
This has 150 liters of helium at 23 degrees celsius and 1 .0 atm.
03:21
So this is my volume.
03:25
This is t1.
03:26
And this is p1...