00:01
All right, the question was asking us, what's the mass of copper? okay? so we know when copper drop into the water, so eventually they will reach an equilibrium temperature, which is given at 25 degrees celsius, which means they absorb the same amount of heat.
00:16
So q1 is equal to q2.
00:18
Q1 is the amount of heat that was absorbed by the water, and q2 is the amount of heat that was absorbed by the copper.
00:27
So we got m1 times c1, delta t1 is equal to m2, c2, c2, dota 2.
00:31
So we get m2, m1 times c1 times d delta t1 over c2 t2.
00:37
Okay, m1 is the mass of water which is 1 .0 kilogram.
00:41
C1 is the specific heat of the water which is 4 ,184 jou per kilogram times kelvin.
00:47
Delta t1 is the changing temperature which is from 20 degrees celsius to 25 degrees celsius which is 25 plus 273 minus 20 plus 273 which is 5 kelvin...