What is latent heat?
Latent heat- the amount of heat required by a system/ substance to change phase. It's also heat absorbed or radiated during a change of phase at a constant temperature and pressure.
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the hidden heat energy
A BTU is defined as the amount of heat required to raise the temperature of one pound of liquid water by one degree Fahrenheit . Melting a pound of ice at 32 Â°F requir…es 143 BTU. As is the case with the calorie , several different definitions of the BTU exist, which are based on different water temperatures and therefore vary by up to 0.5%:
When water vapor condenses back to liquid water, it lets go of internal structural energy in order to revert back to liquid state. THe energy released is Lantent heat of conde…nsation.
latent heat is the heat energy required to convert the substance from its solid form to its liquid form while specific latent heat is the quantity of heat required to convert …unit mass from solid to liquid without change in temperature.
My Dick In Yo Mouth
Latent heat of vapourisation is the amount of energy absorbed by a substance when it changes from a liquid to a gas without any change in temperature. It can be calculated by …using the equation L v =E/m where L v is the latent heat of vapourisation, E is the energy and m is the mass of the substance. Similarly the latent heat of fusion (L f ) is the amount of energy to change a solid into a liquid.
Latent heat of evaporation of water to steam is 2270 KJ/Kg
No. Latent heat of vaporization is defined as the energy required to VAPORIZE 1 kilogram of a liquid completely at its boiling point. Latent heat of sublimation is the energy …required to SUBLIME 1 kilogram of a solid completely into a gas at constant temperature. They're different. Note that the temperatures should be constant during the processes.
The amount of heat released / absorbed from a substance at constanttemperature as you change state from liquid->solid /solid->liquid.
That really depends of which substance is evaporating. However, for water it is 2264.7 kj/kg. It is the amount of energy required in order to change a liquid at it boiling poi…nt into a gas at the same temperature. Notice there is no change in temperature, just a change is state.
the application of latent heat fo fussion is ice is used to put in drinks to make cool because ice has hih specific heat capcity
The term was introduced around 1762 by Joseph Black. It is derived from the Latin latere ( to lie hidden ). Black used the term in the context of calorimetry when referring …to the heat transferred that caused a change of volume while the thermodynamic system was held at constant temperature. In contrast to latent heat, an energy is called a sensible energy or heat, when it causes processes that do result in a change of the temperature of the system. -Wikipedia
Because LPG is a mixture, the value of the latent heat will depend on the exact composition of the mixture. The main components of LPG are: . propane - C 3 H 8 . propylen…e (propene) - C 3 H 6 . isobutane - C 4 H 10 . n-butane - C 4 H 10 . butylene (butene) - C 4 H 8 Since LPG is usually mostly propane and butane, a rough estimate would be in the range of the values for these two components. Note that latent heat is dependent on temperature as well. for the purposes of this answer we will use 30 Â°F (near the boiling point of butane at atmospheric pressure) H vap (propane @ 30 Â°F) = 163 BTU/lb H vap (butane @ 30 Â°F) = 166 BTU/lb
The latent heat of fusion of 1kg water is 334 kJ/kg. (Wikipedia)
It is the amount of heat (measured in the proper unit, say calories) required to change a unit mass (measured in the proper units, say gram) of a substance from the solid to t…he liquid state. This would also be the heat given out by a unit mass of the liquid when it changes to the solid state.