00:02
Hi there.
00:03
In this question, you heated up a sample of gold, and its initial temperature before heating it was the same as its surroundings, 25 .00 degrees celsius.
00:19
So this was before.
00:24
The surroundings, so i'm adding another column here, or another row to our data, the surroundings we are told is equal to the temperature of the metal before heating.
00:37
So the surroundings start off at 25 degrees celsius.
00:44
So then we have the temperature after heating.
00:48
So the heat is absorbed by the gold.
00:52
It becomes 65 .17 degrees celsius.
00:58
Right.
00:59
We're saying initially we are assuming that the temperature of the metal does not change after heating.
01:06
So that means it's not sending any of its energy to heat the atmosphere around it or its surrounding.
01:12
So the surroundings are still 25 degrees celsius in this perfect virtual lab world.
01:20
However, question wants to know, what if the metal is allowed to adjust to the temperature of its surroundings? so we're going to call this the final temperature.
01:42
So we heated the metal to 65 .17 degrees celsius, and the surroundings started at the 25 degrees celsius.
01:54
Heat is transferred from where there is more of it to where there is less of it.
02:00
So that means if heat is transferred from the metal, that means the temperature of the metal will decrease.
02:14
For the surroundings, the surroundings are absorbing that heat that is transferred to the molecules of gas in the surroundings.
02:22
So its temperature will increase.
02:28
And this should proceed until the two temperatures are equal somewhere between 25 degrees and 65 .17.
02:43
Just like the metal was the same temperatures at the surroundings before you started because it adjusted to the same temperature of the surroundings, the temperature of the gold and the surroundings will eventually equal each other if given enough time once again.
03:22
All right.
03:22
So they're eventually going to equal each other.
03:24
The final temperature will be somewhere between 25 and 65 .17.
03:29
It's going to depend upon the sample size on the surroundings...