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The latent heat of fusion is the amount of heat energy needed to change a substance from a solid to a liquid at its melting point. It is a characteristic property of each substance and is usually expressed in joules per gram.

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1y ago

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What is laten heat?

"Latent heat" refers to the heat energy absorbed or released during a change of state without a change in temperature. For example, when ice melts into water, heat is absorbed from the surroundings without a rise in temperature, which is the latent heat of fusion. Similarly, when water vapor condenses into liquid water, heat is released without a decrease in temperature, known as the latent heat of condensation.


Why is there no temperature change when lead freezes?

Lead has a low freezing point (-38.83°C) which is close to room temperature. This means that the temperature change when lead solidifies is not significant enough to be easily detectable. Also, the latent heat of fusion of lead is relatively low, so the amount of heat absorbed or released during the phase change is minimal, further contributing to the lack of noticeable temperature change.


How much heat is necessary to change 380 g of ice at -7C to water at 20C?

Heat is used in three stages 1. To rise the temperature of ice from -7 to 0 deg celsius 2. To change ice into water - melting 3. To rise temperature of water from 0 to 20 deg Celsius Hence Heat = 0.380*S*7 + 0.380*L+0.380*s*20 S - specific heat capacity of ice s- specific heat capacity of wate L= Laten heat of fusion of ice. Please get the data from data book, plug and find the heat needed


When nuclear fussion occurs some mass is lost where does it go?

The mass that is lost during nuclear fusion is converted into energy according to Einstein's equation, E=mc^2. This released energy is what powers the sun and other stars.


When heat is added or subtracted is called?

When heat is added, it is called heat absorption or heat gain. When heat is subtracted, it is called heat release or heat loss.