Calculate the quantity of heat energy needed to raise the temperature of a piece of aluminium?

Question

Calculate the quantity of heat energy needed to raise the temperature of a piece of aluminium.?
mass=3kg
temperature from 20degree celcius to150 degree celcius
specific heat capacity of aluminium=910 J kg-1 K-1

Answer 1

this is quite easy if you know how to do it.

Heat Energy = M S T
where M = Mass in Kg; S = Specific Heat Capacity of the substance; T = is the change in temperature in kelvin.

So 3 x 910 x 130 = 354900 J or 354.90 KJ

I have used Celsius as my change in temperature because it does not matter here as constant of 273.15 will be deducted from both when you find the difference.

Hope this helps and don't forget to vote for the answer!!.

Answer 2

Q=m*Cp (t2-t1)
For aluminium Cp = 910j/kg/)K
Q= 3*910*(150-20)
Q=2730*130=354900joules

Answer 3

h = mc(delta)t
= 3(910)(150-20)
= 2730(130)
= 354900 J

(delta)t is the change in t (temperature)
c is the specific heat capacity

Answer 4

∆T = 130°C (or K)

130 x 3 x 0.910 = 355kJ