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.

Question

My work
I keep getting 0.012 but it is not right
I know the formula is Q= m x C x T

Answer 1

-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

Answer 2

So 0.012 is right?

Answer 3

Wait why did you put 902.... 9.2 X 10^2 is equal to 920

Answer 4

yes 0.012 is right