Specific Latent Heat Formula

L 300 5. Latent heat also known as latent energy or heat of transformation is energy released or absorbed by a body or a thermodynamic system during a constant-temperature process usually a first-order phase transition.

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We define the specific latent heat of the fusion equation in the following manner.

. The latent heat of vaporisation is when the liquid turns into gas whereas the latent heat of fusion occurs during the solid-state transition to liquid. The heat retained or expelled is denoted by Q. A chunk of metal seems to weigh 60g around 20C.

What is Specific latent heat. Let c be the specific heat of the metal. The latent heat formula is as follows.

The specific latent heat is the energy calculation required for phase transformation. Determine the specific heat of metal given that the latent heat of steam 540 calg. M Mass of a substance.

05g of the vapour condenses before being submerged in a steam stream at 100C. Specific latent heat can be used to calculate the energy needed to change the state of a substance as indicated in the following formula. Where L Specific latent heat.

Hence latent heat value is 60 kcalkg. Where E is the energy in joules J m is the mass in kilograms kg and L is the specific latent heat in joules per kilogram Jkg. At 20C a piece of metal has a density of 60g.

The specific latent heat is implied by the letter L. Heat gained by the metal. Latent heat L Heat Mass-1.

The latent heat is normally shown as the amount of heat energy in joules per Kg mass of the substance undergoing the change of state. L 60 kcalkg. The most well-known units of specific latent heat are joules per gram Jg and kilojoules per kilogram kJkg.

It is based on mass and mole differently. When immersed in a steam current at 100C 05g of the steam condenses thereon. Specific latent heat is the energy needed to change the state of a substanceLatent heat is the energy absorbed or released by a substance during a change in its physical state.

Heat gained by the metal. Q 05 540 cal. Q 60 c 100 20 Q 60 c 80 cal.

Substituting the value of m and the specific latent heat. If m kg of solid substance changes to liquid state at a constant temperature which is its melting point the heat absorbed by the substance or the latent heat of fusion formula is given by. The latent heat is given by the equation.

Compute the particular heat of the metal assuming the latent heat for steam 540 calg. Since work force displacement. The formula for specific latent heat is L Qm.

When ice a solid melts it turns into water a liquid. Q 05 Kg 334 KJKg 167 KJ 167000 J. Unit of specific latent heat.

1 The dimensional formula of mass M 1 L 0 T 0. Where m is the mass of the body and its units are kg. Q Heat retained or discharged.

The heat released by the steam. Specific latent heat is defined as the amount of energy that is required per unit mass of a substance ice to change its physical state water at a constant temperature. Let c be the specific heat of the metal.

L Q M. Specific Latent Heat of Fusion Equation. When a body encounters a steady temperature process specific latent heat is defined as the amount of heat energy heat Q that is consumed or emitted.

Provided that the latent heat of steam is 540 calg calculate the specific heat of the metal. Latent heat can be understood as energy in hidden form which is supplied or extracted to change the state of a substance without changing its. Sample Problems on Latent Heat and Specific Latent Heat Q 1.

The specific latent heat is calculated using the formula L ΔQm. The formula for latent heat is given by L Q M. Q is the heat absorbed or released based on the direction of transition and its units are kJ.

Q m c Δt. L is the Latent Specific Heat and expressed in units kJkg. During the Calculation of Latent Heat a formula can be quite handy and makes your job much simple.

The following is the formula for specific latent heat. The three states of matter are solid liquid and gas. As a result the latent heat value is 60 kcalkg.

Provided that the latent heat of steam is 540 calg calculate the specific heat of the metal. Latent Heat Formula is Q m L. L 300 5.

When immersed in a steam current at 100C 05g of the steam condenses on it. The dimensional formula of latent heat is given by M 0 L 2 T-2 Where M Mass. 2 A liquid with an latent heat of 885 KJKg evaporates its latent heat is of 50 KJ what is the mass of the liquid.

Q 60 x c x 100 - 20 Q 60 x c x 80 cal. When water a liquid boils it turns. The mass of material is m.

2 Also the dimensions of heat dimensions of energy dimensions of work. This is called fusion. Specific Latent heat of vaporization- It is defined as the quantity of heat observed by the material to convert from solid to vapour directly without melting and boiling.

L 60 kcalkg. Q m L. By the principle of mixtures Heat given is equal to.

This is the amount of energy released when water is melting at 0 C.

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