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# The heat of fusion is defined as the energy required at constant temperature to change 1 unit mass of a?

Updated: 4/28/2022

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11y ago

The heat of fusion is the amount of energy required to change 1 unit mass of a solid to a liquid at constant temperature.

Wiki User

11y ago

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Q: The heat of fusion is defined as the energy required at constant temperature to change 1 unit mass of a?
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### Definition of cooling constant?

newton's cooling constant is defined as the ratio b/w change in temperature and difference in temperature of hot body and temperature of surrounding

### The amount of heat necessary to change a liquid to a solid at constant temperature?

None - heat is evolved, not required.

### Explain what happens to the temperature of an ice cube as it melts?

Temperature of melting iceis a constant property: it does not change during melting (stays 0oC, this is even one of the the defined value of the Celsius temperature scale)(for any other melting solid the same is valid at each melting point temperature)

### Why does the temperature of any substance remain constant during the change of a state?

because energy is required to break the intermolecular forces in the molecule

### What happens to temperature during a phase change?

Temperature is constant during a phase change.

### A change of phase takes place at a constant what?

A change of phase takes place at a constant temperature.

Temperature

### What happen to the temperature during phase change?

The temperature remain constant.

### How does temperature change during change of physical change?

Temperature remains constant during the change in phase (physical state).

### Does the gas constant R vary with temperature?

No, the gas constant, or any constant, is constant meaning it doesn't change.

### Can an object be accelerating with constant velocity?

No, since acceleration is defined as a change in velocity. If there is no change, there is no acceleration.

### Why does the temperature not change during a phase change?

During the change of state, the molecules of a substance absorb energy to overcome the strong intermolecular force of attraction between them. Hence the heat energy which we supply is absorbed by them for this purpose. So change in temperature is not observed.