Energy: Specific Heat Capacity Flashcards
What is specific heat capacity?
Specific heat capacity is **the amount of energy required to raise the temperature of 1kg of a substance by 1oC
Calculate the energy required to increase the temperature of 2kg of water from 20oC to 100oC.
The specific heat capacity of water is 4200J/kgoC.
2 x 4200 x 80 = change in thermal energy
= 672 kJ / 672, 000 J
What is the formula for the change in thermal energy?
△E = m x c x △θ
(change in thermal energy (J) =mass (kg) x specific heat capacity (J/kgoC) x change in temperature (oC))
A gold ring (specific heat capacity of gold: 130 J/kgo) is heated by supplying the 1000J of thermal energy to raise its temperature from 25ºC to 100ºC. Calculate the mass of the ring
0.10kg / 100g