00:01
So this question here we have several processes.
00:02
We're going to start at 145 0 degrees celsius and then we're first going to go to 100 degrees celsius.
00:15
So this here we're going to cool the steam and then we're going to go at 100 degrees celsius.
00:27
This is gas to 100 degree or 100 .0 degrees liquid so we're going to condense here then we're going to go from 100 to 0 degrees celsius so we're going to cool the liquid and then we're going to go from this is liquid to 0 degrees celsius solid so we're going to freeze and then we're going to go from zero to negative 45 degrees celsius or 0 degrees celsius so we're going to cool the ice here q1 q2 2 3 q4 q5 q1 is equal to we calculate that.
01:40
We have 18 grams of water, 45 degrees celsius, and this is 2 .09.
02:05
So 18, 1 mole of steam.
02:09
So here, 1 mole steam is equal to 18 .0 grams per mole.
02:19
Grams of water.
02:23
For q1 we have 18 .0 grams.
02:28
This is 2 .09 or 2 .01 heat capacity steam.
02:33
Jules per gram degrees celsius and this would be 45 degrees celsius.
02:38
Temperature change.
02:41
We've got 18 .0 times 2 .01 times 45 .0.
02:48
That's 1628 .0...