Answer:
10 KJ
Explanation:
We are told that 4.0kJ of energy is required to raise the temperature of 1.0kg of paraffin by 2.0°C.
Formula for heat energy here is;
Q = mcΔt
Where;
m is mass
c is specific heat capacity
ΔT is change in temperature
Thus;
4 = 1 × c × 2
c = 4/2
c = 2 Kj/Kg°C
The energy required to raise the temperature of 5.0kg of paraffin by 1.0°C would be;
Q_new = 5 × 2 × 1
Q_new = 10 KJ
