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Is the amount of energy required to change 1kg of liquid into gas with no temperature change.
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Why do you feel cool after you perspire?
Because as water evaporates it absorbs latent heat of vaporisation
What requires more energy the latent heat vaporisation of water or the latent fusion of ice?
The latent heat of vaporisation of water requires more energy. This is because on melting, the intermolecular bonds in water are only weakened whereas on boiling, the bonds are completely broken, which requires a larger amount of energy.
Why the time needed to vaporize a sample is greater than the time needed to melt a sample?
The amount of time depends on the latent heat of vaporisation and the latent heat of melting.
What do you call the heat energy that is released or absorbed during a change of state of water?
The heat energy released or absorbed during a change of state of water is called latent heat. This energy is used to break or form intermolecular bonds without changing the temperature of the substance.
What is the electrical method to determine the specific latent heat of vaporisation?
One way to determine the specific latent heat of vaporization using electricity is to pass a known electric current through a resistor immersed in a liquid until it vaporizes. By measuring the amount of energy supplied through the electric current and the resulting increase in temperature of the liquid, the specific latent heat of vaporization can be calculated using the formula Q = I^2Rt, where Q is the energy supplied, I is the current, R is the resistance of the resistor, and t is the time taken to vaporize the liquid.
Is latent heat of vaporisation fixed?
No, the latent heat of vaporization is not fixed and can vary depending on the substance. It represents the amount of energy required to change a unit mass of a substance from liquid to gas at a constant temperature and pressure.
What is the heat that is released when water condenses and changes to liquid form?
The heat released when water condenses and changes to liquid form is called the latent heat of condensation. This heat is released because the water vapor loses energy as it transitions to a liquid state, leading to a release of thermal energy.
What physical properties are size indepentent?
There are very many. Some are:Density (and specific gravity), electrical conductivity, thermal conductivity, boiling point, latent heat of vaporisation, melting point, latent heat of melting, elasticity, malleability, ductility, electronegativity (though that could be considered a chemical property), temperature.
Define latent heat of fusion and latent heat of vapourisation?
Latent heat of vapourisation can be define as the rate by which water is heat to vapourise, it has a difference with evaporation because evaporation occurs directly when the water start heatin while vapourisation always start in a specific temperature
What is the amount of energy required to change a material from a liquid to a gas?
Latent Heat of Evaporation, or Evaporation Enthalpy. It is given in units of energy over unit of mass, i.e., KJ/Kg.
What is the name of the process in which liquid water turns into water vapour?
this process is called evaporation. it occurs when the bonds break, due to the average amount of energy, the temperature, going up enough to provide the latent heat of vaporisation. the latent heat of vaporisation is merely the name of the energy amount that it takes to break the bonds.
What unit is specific latent heat measured in?
The unit for specific latent heat is J Kg-1(Joules per Kilogram)
