Calculate the energy required to vapourise 50g of water initially at 80oC.[specific heat capacity of water = 4.2Jg-1K-1][specific latent heat of vaporisation of water = 2260Jg-1]
- 113,000J
-
117,200J
- 234,400J
- 420,000J
The correct answer is: B
Explanation
mc\(\theta\) + ML = 50 x 4.2 x 20 + 50 x 2260
= 117,200J