A calorimeter of water equivalent 10xx10^(-3)kg is filled with 70xx10^(-3)kg of a substance at its melting point. The substance is found to solidify completely in 21 minutes. A similar calorimeter containing 80xx10^(-3)kg of water at the same temperature cools at the rate of 1.5^(@)C per minute, the room temperature being the same in both cases. What is the latent heat of fusioin of the substance? (Specific heat capacity of water =4200 Jkg^(-1) K^(-1))

A calorimeter of water equivalent 10xx10^(-3)kg is filled with 70xx10^

1.	A calorimeter of water equivalent 10xx10^(-3)kg is filled with 70xx10^(-3)kg of a substance at its melting point. The substance is found to solidify completely in 21 minutes. A similar calorimeter containing 80xx10^(-3)kg of water at the same temperature cools at the rate of 1.5^(@)C per minute, the room temperature being the same in both cases. What is the latent heat of fusioin of the substance? (Specific heat capacity of water =4200 Jkg^(-1) K^(-1))
Answer» ANSWER :`170xx10^(3)JKG^(-1)`