00:01
Hello everyone, my name is ahmad ali in this question.
00:03
We have a water.
00:05
This water condensing on iron block.
00:13
The weight of the water is 0 .95 gram and the weight of the iron block is 75 grams.
00:29
So he wants to know the final temperature on iron block.
00:36
So what he mean by this question? what he mean is that there are energy emitted from water and transfer to the iron block.
00:51
If we could determine this queue, we can know what will be the final temperature in iron block.
01:00
So first of all, what is the heat that will emit it from the water? we take relation to say that you equal number of moul of water times by heat of condensation of this water.
01:19
So the number of more of water is its weight by gram divided by its molecular weight, which is 18 gram.
01:33
So this is a lot of number of mull, which is a weight divided by the molecular weight times by the delta h.
01:39
Condensation.
01:41
Here he gives us the delta h vaporization so the condensation is similar to vaporization but we put negative sign so it will be negative 44 kilojoules so the result is equal negative 2 .3203 kilojoules which is is the heat emitted from the water...