00:02
In this question we are trying to determine the mass of our sample of magnesium given an amount of energy that was added to it, the temperature change, and the specific heat.
00:16
So what we need is an equation that relates all of these things.
00:19
The equation looks like this.
00:22
It is q, which is the amount of heat energy added, is equal to m, which is the mass of the sample, times c, which is the specific heat, times delta t, which is the change in temperature.
00:41
Okay, so in this problem we are given all of these values except for the mass.
00:50
We are given the amount of energy that was added, that is 3 ,750 joules.
00:58
That is the amount of heat that was added.
01:00
We're trying to find the mass, we don't have a value for that, but we do have the specific heat that is given to us, it's 1 .02 joules per gram degree celsius.
01:14
We are also told that the temperature of the sample increases by 23 degrees.
01:19
So the change in temperature is 23 degrees celsius.
01:25
Alright, so it appears that we have all of the information here except for m.
01:31
So we can solve for m...