A piece of ice of mass 60g is dropped into 140g of water at 50℃. Calculate the final temperature of water when all the ice has melted.
Answers
Answered by
4
Answer: 11
Explanation:
Let final temperature of water is T .
Thermal energy gain by ice = mice × ( L + Cp T) = 60 × ( 336 + 4.2 × T )
where mice is mass of ice, L is latent heat of fusion of ice and Cp is specific heat of water.
Thermal energy lost by water = mw × Cp × ( 50 - T ) = 140 × 4.2 × ( 50 - T )
where mw is mass of water
By conservation of energy, we have, 140 × 4.2 × ( 50 - T ) = 60 × ( 336 + 4.2 × T )
from above equation, we get T = 11 Celsius
Similar questions