J
Justin
10 Aug 18 9:21 PM

What is latent heat of vaporisation?
What is latent heat of fission?
What is solidification?
What is marcopolo?
What is the derivation formula of 1st law of motion?

Replies to this post

A
Anju

At the solidification temperature, atoms from the liquid, such as molten metal, begin to bond together and start to form crystals. The moment a crystal begins to grow is know as nucleus and the point where it occurs is the nucleation point. When a metal begins to solidify, multiple crystals begin to grow in the liquid.

0
A
Anju

When a substance changes phase, the arrangement of its molecules changes, but its temperature does not change. If the new arrangement has a higher amount of thermal energy, then the substance absorbs thermal energy from its environment in order to make the phase change. If the new arrangement has a lower amount of thermal energy, the substance releases thermal energy to its environment.

Latent heat of vaporization is a physical property of a substance. It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. It is expressed as kg/mol or kJ/kg. When a material in liquid state is given energy, it changes its phase from liquid to vapor; the energy absorbed in this process is called heat of vaporization. The heat of vaporization of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol.

0
A
Anju

The enthalpy of fusion of a substance, also known as (latent) heat of fusion, is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.

0