Question

How much ice will melt by 50000 J of heat? Latent heat of fusion of ice=336000 J/kg.& (The answer is 150g but need a solution of how)

Answer 1

QUESTION:

How much ice will melt by 50000 J of heat? Latent heat of fusion of ice $L_f = 336000 \, \mathrm{J/kg}$. (The answer is 150g but need a solution of how)

SOLUTION:

As latent heat of fusion of ice is heat absorbed by ice during melting:

$$Q = L_f m_{ice}$$

Hence

$$m_{ice} = \frac{Q}{L_f} = \frac{50000}{336000} = 0.1488 \, \mathrm{kg} = 148.8 \, \mathrm{g}$$

ANSWER:

$$m_{ice} = 148.8 \, \mathrm{g}$$