1. A certain substance melts and freezes at 200*C. A block of this substance has a mass of 500kg and is entirely solid at 200*C. It is subjected to heating and it

melts. It takes 50,000cal of energy to melt the substance entirely into liquid at 200*C. What is the heat of fusion for this material?

2. There is a vessel containing 1kg of liquid. It has a specific heat of 1.355cal/g*C. Suppose that is exactly at it’s vaporization temperature of 235*C and 5,240cal

if energy is transferred to the liquid in the form of heat. The temperature of the liquid in the vessel after the application of this heat will be?

3. A rod of metal is 4.5653100m long at a temperature of 36*C. The temperature is lowered until the road shrinks to 4.5643000m. The temperature is measured at

35.552*C. What approximately, is the thermal coefficient of linear expansion for this metal?

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