What is SI unit of specific latent heat?
The specific latent heat (L) of a material… is a measure of the heat energy (Q) per mass (m) released or absorbed during a phase change. is often just called the “latent heat” of the material. uses the SI unit joule per kilogram [J/kg].
What are the units for specific latent heat of vaporisation?
where: Q is the amount of energy released or absorbed during the change of phase of the substance (in kJ or in BTU), m is the mass of the substance (in kg or in lb), and. L is the specific latent heat for a particular substance (kJ kg−1 or in BTU lb−1), either Lf for fusion, or Lv for vaporization.
What is the SI unit of density?
Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity.
What are three types of latent heat?
There are three different types of latent heats, Latent Heat of Fusion, Latent Heat of Vaporization, Latent Heat of Sublimation.
What is the formula of latent heat?
Answer: The latent heat is given by the equation: Q= m L. substituting the value of m, and the specific latent heat. Q= 0.5 Kg * 334 KJ/Kg = 167 KJ = 167000 J. This is the amount of energy released when water is melting at 0 °C.
What is the the importance of latent heat?
Latent heat plays a very important role in thunderstorms and hurricanes . Clouds form when warm air rises and the water vapor it contains condenses onto particles called cloud condensation nuclei. At that point the air becomes saturated. When this air first begins to rise, the water vapor is in the gaseous phase.
What is the formula for latent heat of fusion?
Equation of Latent Heat of Fusion. The equation for H f is as follows: H f =ΔQ f/ m. Here, ΔQ fis the change in the energy of the substance and m is the mass of the substance.
What does latent heat of evaporation represent?
In case of liquid to gas phase change, this amount of energy is known as the enthalpy of vaporization, (symbol ∆H vap; unit: J) also known as the (latent) heat of vaporization or heat of evaporation. Latent heat is the amount of heat added to or removed from a substance to produce a change in phase .
