Asked by Jiskha help

216J if energy is required to raise the temperature of aluminium from 15 degrees Celsius to 35 degrees Celsius. Calculate the mass of the aluminium.

My work
I keep getting 0.012 but it is not right
I know the formula is Q= m x C x T
Answered by somebody help i am new
-216J of energy means 216 joules of heat energy is absorbed by the piece of aluminum.
∆Q = 216 J
∆T = Tf – Ti = 35 – 15 = 20˚

216 = mass * 902 * 20
Mass = 216 ÷ 18040
The mass is approximately 0.012 kg
Answered by Jiskha help
So 0.012 is right?
Answered by Jiskha help
Wait why did you put 902.... 9.2 X 10^2 is equal to 920
Answered by somebody help i am new
yes 0.012 is right
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