Example 1
Melting 1.0 kg of ice at 0 °C with L = 334 kJ/kg requires about 334 kJ.
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Physics tools › Latent heat
Mendeleev · Physics
Latent heat
During an ideal phase change at constant temperature, energy can be absorbed or released without changing temperature.
Formula usedQ = mL
Visual cue · thermal change
Calculate
Latent heat
What do the symbols mean?
Qheat transferred
mmass
Lspecific latent heat
Two worked examples
Example 2
For 250 g of ice under the same conditions, the required energy is about 83.5 kJ.
Good to knowUse the latent heat for the relevant substance and phase change. Sensible heating before or after the change must be calculated separately.