Answer:
17000 joules.
Explanation:
Explanation:
With knowledge of the specific heat capacity of a substance, its mass, and the temperature change, we can convert this to the energy required for this temperature change using:
ΔH=mCΔT, where
ΔH=change in enthalpy (J)
m= mass of substance being heated (g) i.e. water in this question
C= specific heat capacity (J/g°C)
ΔT= change in temperature (°C)
We know mass=65g and ΔT=76°C−12°C=64°C
The specific heat capacity of water is 4.18J/g°C
Therefore, ΔH=65g⋅4.18Jg°C⋅64°C
=17388.8J
=17000J (2 significant figures)
