nothing(noun) Antonyms: anything, everything, something.

incorrigible(adj) impervious to correction by punishment. Antonyms: improvable, correctable, amendable, reformable, corrigible, redeemable.

antonyms of incorrigible

• good.
• manageable.
• nice.
• obedient.
• reformable.

latent. Antonyms: visible, apparent, manifest, conspicuous, exposed, unconcealed, attentive, developed, explicit. Synonyms: invisible, inapparent, unobserved, hidden, concealed, undeveloped, implicit, potential, inherent, secret, occult.

Synonyms & Antonyms of latent

• dead,
• dormant,
• fallow,
• free,
• idle,
• inactive,
• inert,
• inoperative,

Adjective. latent, dormant, quiescent, potential mean not now showing signs of activity or existence. latent applies to a power or quality that has not yet come forth but may emerge and develop.

Latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.

The heat energy which has to be supplied to change the state of a substance is called its latent heat. Latent heat does not raise (or increase) the temperature. But latent heat has always to be supplied to change the state of a substance .

A total of 334 J of energy are required to melt 1 g of ice at 0°C, which is called the latent heat of melting. At 0°C, liquid water has 334 J g−1 more energy than ice at the same temperature. This energy is released when the liquid water subsequently freezes, and it is called the latent heat of fusion.

Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process. Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling).

Measuring latent heat

1. Latent heat can be measured from a heating or cooling curve line graph.
2. The longer the horizontal line, the more energy has been used to cause the change of state.

The heat of vaporization is not a constant. It is temperature dependent as shown in Figure 1 by the example graphs of temperature versus heat of vaporization for acetone, benzene, methanol and water.

The temperature of the hot water leaving a steam trap will be at or just below the water boiling point corresponding to the pressure. As the latent heat of steam at atmospheric pressure is 2257 kJ/kg the amount of flash steam produced will be 299/2257 = 0.133 kg/kg of condensate.

Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. The latent heat of condensation is defined as the heat released when one mole of the substance condenses. It is expressed as kg/mol or kJ/kg. The energy released in this process is called heat of condensation.

Water has a high latent heat of vaporization, which is why steam burns are so dangerous. When steam burns a person’s arm for example, this energy transfer causes the steam to condense—which uses much more energy than simply changing the temperature.

Latent heat calculation The specific latent heat is different for solid to liquid transition and liquid to gas transition. For example, if we want to turn 20 g of ice into water we need Q = 20 g * 334 kJ/kg = 6680 J of energy. To turn the same amount of water into vapor we need Q = 45294 J .

If m kg of solid converts to a fluid at a constant temperature that is its melting point, the heat consumed by the substance or the latent heat of fusion formula is expressed as. Q = m × L.

Latent heat, also called heat of transformation, is the heat given up or absorbed by a unit mass of a substance as it changes from a solid to a liquid, from a liquid to a gas, or the reverse of either of these changes. It is called latent because it is not associated with a change in temperature.

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.

Vaporization is the change of liquid water to water vapor. Vaporization requires addition of the latent heat of vaporization to liquid water. The latent heat of vaporization supplies the liquid water molecules with enough energy to become vapor molecules.

As pressure on molecules increases they require more heat to overcome the pressure force acting or to escape and thus latent heat required is more. Thus as presure increases at 100 degree latent heat of vapourisation also increases while as pressure increases latent heat of condensation decreases.

H2−H1=L. So, during a change of state at constant pressure the increase or decrease of enthalpy is equal to the latent heat of transformation.

At the normal boiling point of a liquid, the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere, 760 Torr, 101.325 kPa, or psi.

Likewise, the high latent heat of vaporization (see below), indicates that when water vapor (derived from evaporation of water at the ocean’s surface driven by solar energy receipt at low latitudes) condenses into liquid droplets at high elevations or high latitude, the latent heat is released into the environment.

The heat of fusion of water is unusually high. It is also a latent heat and is sometimes called the latent heat of fusion. It has only one value for water, because water freezes at one value (0 °C), and it is 79.71 cal/g or the rounded number 80 cal/g.