The heat of fusion is:
Q = specific heat x mass
To calculate the heat needed to melt a block of ice at its melting point, you need to know the mass of the ice block, the specific heat capacity of ice, and the heat of fusion of ice (or latent heat of fusion). The formula to calculate this heat is Q = m * ΔHf, where Q is the heat energy, m is the mass, and ΔHf is the heat of fusion.
Another name for heat of fusion is enthalpy of fusion.
In conclusion, the heat of fusion refers to the energy required to change a substance from a solid to a liquid state at its melting point. It is an important property for understanding phase changes and can be used to calculate the amount of heat needed or released during these transitions. Understanding the heat of fusion is crucial in various fields such as chemistry, physics, and engineering.
The heat of fusion is used to first convert the volume of liquid to its solid form, then the heat of vaporization is used to convert the solid to vapor. By summing the two energy values, you can calculate the total energy required to vaporize the liquid volume.
The formula to calculate the latent heat of fusion is Lf = Q / m, where Lf is the latent heat of fusion, Q is the amount of heat added or removed during the phase change, and m is the mass of the substance undergoing the phase change.