The latent heat of fusion of ice is 80 cal/g. How much heat is required to change 10g of ice at 0°C into water at the same temperature?

Jamb 1978

The latent heat of fusion of ice is 80 cal/g. How much heat is required to change 10g of ice at 0°C into water at the same temperature?

A. 80 cal

B. 10 cal

C. 8 cal

D. 800 cal

E. 400 cal

ANSWER: Option  D

EXPLANATION: Use the formula Q = mL

Where; Q —> Quantity of heat

             m —> mass of the ice

             L —> Latent heat of fusion

Just substitute the values for the variable and get your answer!

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