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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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 condensation.
Sensible heat is potential energy in the form of thermal energy or heat. The thermal body must have a temperature higher than its surroundings. The thermal energy can be transported via conduction, convection, radiation or by a combination thereof. The quantity or magnitude of sensible heat is the …product of the body's mass, its specific heat capacity and its temperature above a reference temperature. In many cases the reference temperature is inferred from common knowledge, i.e. "room temperature".. latent heat is the amount of energy in the form of heat released or absorbed by a substance during a change of phase (i.e. solid, liquid, or gas). Two latent heats (or enthalpies) are typically described: latent heat of fusion (melting), and latent heat of vaporization (boiling). The names describe the direction of heat flow from one phase to the next: solid â liquid â gas.. The change is endothermic, i.e. the system absorbs energy, when the change is from solid to liquid to gas. It is exothermic (the process releases energy) when it is in the opposite direction ( Full Answer )
It is the amount of heat that is required to melt something, and the amount of heat that it gives off when it freezes. (They are the same amount.)
The latent heat of vaporization is what is commonly referred to asboiling. This is the amount of energy require to change from astate of liquid to vapor.
Latent heat of fission is analogous to latent heat of fusion (see http://en.wikipedia.org/wiki/Enthalpy_of_fusion) except that it applies to the state of change from liquid to gas. Also see http://en.wikipedia.org/wiki/Latent_heat.
heat absorbed or released in a phase change that does not cause a change in temperature.
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.
Latent heat is the amount of heat released or absorbed when asubstance undergoes a change of state. The amount of heat does notinclude any change in the temperature of the substance.
There are many different kinds of plastic, so there would be no "fixed" latent heat of vaporization. Additionally, heating most plastics would not cause them to vaporize. They would burn in the presence of air (oxygen), or pyrolize in an inert atmosphere. Plastics won't generally change from a liqui…d to a gas like water becomes steam when it is hot enough. The heat will cause chemical changes in the plastic, and it will cease to be what it was in the beginning. ( Full Answer )
The specific latent heat of fusion of water is 334 kJ/kg. Ice meltsat 0 degrees Celsius and boils at 100 degrees Celsius.
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
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 substa…nce. Similarly the latent heat of fusion (L f ) is the amount of energy to change a solid into a liquid. ( Full Answer )
It is defined as the amount of heat required for the 1 mole of ice to bring a change in its state, that is, from solid state to liquid state. It is also known as enthalpy of fusion, specific melting point or latent heat of fusion of ice. The particular temperature at which there is a change in the s…tate of the ice is known as the melting point of ice. Quantitatively the heat of fusion for water is: 79.72 cal/g or 334.0 kJ/kg ( Full Answer )
Latent heat is an important form of atmospheric energy. Latent heatis a property of water vapor in the atmosphere and when water vaporcondenses it releases latent heat. Latent heat must be supplied toevaporate liquid water and this heat affects the behavior of theweather.
The latent heat of vaporisation is the energy required to convertliquid to gas. It is expressed in joules per gram and varies fromsubstance to substance. The energy is required to enable themolecules of liquid to overcome the molecular attraction betweenmolecules and break free to become free-moving… molecules of gas. You can see this latent heat happening with boiling water. As itboils the water stays at 100 Degrees C. despite the fact that thereis a flame heating it. The energy of that extra heat input is beingtaken away from the pot by the escaping water vapour and iscontained in that vapour. ====When one milliliter (ml,or cc, or gram) of water evaporates, it needs to absorb 'X' amountof energy from its surroundings so as to be able to increase itsKinetic Energy, which then allows the change in state from a liquidto a vapor to occur. Therefore, the latent heat of vaporization is the amount of HeatEnergy that is required to raise one gram of water from the liquidstate to the gaseous state. ===== The Important thing to note about the latent heat of Vaporisationis that it is given back to the environment when the vapourcondenses back to a liquid. ( Full Answer )
I think sensible heat is higher because it accompanies a change in temperature whereas in latent there is no temperature change
Latent heat is the energy required to change the state of ice to liquid when it is at 0 degrees C. Measure in Joules.
1. Process that release "Latent Heat" : a. Freezing, b. Condensation, - (Greatest amount of released Latent Heat.) c. Deposition. 2. Process that absorbs "Latent Heat" : a. Melting, b. Evaporation, - (Greatest amount of absorbed Latent Heat.) c. sublimation.
The amount of heat released / absorbed from a substance at constant temperature as you change state from liquid->solid / solid->liquid.
The latent heat of vaporization for water is 539.6 cal/gram. The only thing can be cosidered is the total amount of heat added to water to vaporize at what atmospheric pressure.it may change the latent heat of vaporization. 2250 kJ/Kg
You can have a glass of water at a temperature of 32 degrees F, and you can have a little block of ice with the same temperature and weight as the water. What's the difference ? Simply cooling water to 32 degrees doesn't cause it to solidify. You have to continue removing heat from it, during which …its temperature doesn't change, but when you have removed enough heat, it solidifies. I seem to recall that the figure for water is something like 54 calories per gram, known as the 'latent heat of fusion' for water. It's a lot of heat, but it doesn't change the temperature a bit, only the physical state. Now you know why ice is such a good choice for cooling drinks. ( Full Answer )
Water vapor in the atmosphere is extremely important. It is water vapor that changes into both liquid and solid cloud particles that fall to the Earth as precipitation. When water vapor changes to liquid water or ice, it releases large amounts of latent heat. Latent heat is a huge source of atmosphe…ric energy that is needed for storms, thunderstorms or hurricanes to form. For each kilogram of cloud particles that form, over 120,000 calories are given off. When water vapor evaporates from the ocean or a lake or a river, that water vapor may be transported far from the original point of evaporation. It might be transported from warmer, tropical areas all the way to polar regions. At this point, the water vapor would be cooled and would condense, releasing latent heat of condensation. So what started out as evaporation of water many miles south, could end up prompting a snowstorm in Canada! ( Full Answer )
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 tem…peratures should be constant during the processes. ( Full Answer )
The amount of heat released / absorbed from a substance at constanttemperature as you change state from liquid->solid /solid->liquid.
Hf = mLf m - (g/lbs) *1lb = 454g Lf - latent heat of fusion - 80 kcal/kg fr water !
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
'Latent heat' means heat that is absorbed but does not result in a temperature increase. A good example of latent heat is boiling of water: H2O(l) + heat = H2O(g) However, the temperature remains at 100 deg C while water is boiling, so that the heat being consumed is used to vaporize water and not t…o increase the temperature of the liquid. Latent heat can be added to the atmosphere by evaporation of water. Since a water molecule contains more heat at a given temperature than an air (N2 and O2) molecule, its presence increases the heat content of the air without changing the temperature. ( Full Answer )
It depends on which type of metal you are talking about: Metal. Latent Heat of Fusion. (kJ/kg) . (cal/g) . Aluminum. 398. 95. Antimony. 161. 38.5. Beryllium. 1356. 324. Bismuth. 51.9. 12.4. Cadmium. 55. 13.2. Chromium. 331. 79. Cobalt. 25. 66. Copper. 205. 49. Gold. 6…3. 15. Iridium. 138. 33. Iron. 272. 65. Lead. 23. 5.5. Magnesium. 368. 88. Manganese. 268. 64. Mercury. 11.3. 2.7. Molybdenum. 289. 69. Nickel. 297. 71. Niobium. 285. 68. Osmium. 142. 34. Platinum. 100. 24. Plutonium. 12.6. 3. Potassium. 61. 14.5. Rhodium. 167. 50. Selenium. 67. 16. Silicon. 1926. 430. Silver. 111. 26.5. Sodium. 113. 27. Tantalum. 172. 41. Thorium. 71. 17. Tin. 59. 14.1. Titanium. 419. 100. Tungsten. 193. 46. Uranium. 50. 12. Vanadium. 410. 98. Zinc. 113. 27. ( Full Answer )
Latent heat of fusion is the heat energy required to convert the substance from its solid form to its liquid form without change in temperature while latent heat of vaporisation of a substance is the quantity of heat required to change the substance from liquid to vapour without change in temperatur…e ( Full Answer )
This is because of its polar nature - water molecules have a strong dipole, therefore, the water molecules attract each other more than most other molecules do.
The latent heat of fusion is defined as the heat energy required to convert a kg of a substance of liquid into solid of the same substance without a change of temperature. Q = mL where Q = Heat Energy in joules, m=mass of substance, L= Latent heat of fusion Taking units, [J] = [kg] [L] […L] = [J]/[kg] so units of latent heat of fusion are joules.kg -1 ( Full Answer )
I would presume the question is about cause of energy demand on phase change. Liquid content as liquid because of interaction force between molecules (dipole, H-bond, van der Waals etc) it could calculate the heat of vaporization by the amount of energy to dissociate these bonding. For normal en…gineering: Calculation of latent heat usually done via fitting equation not from intermolecular force. ( Full Answer )
latent heat is heat used or released in changing state. important because it is why sweating cools us. the latent heat of the evaporation cools our skin as the sweat evaporates
Latent heat is a type of heat, and heat is a type of energy. Therefore, units of energy are used. In the SI, that would be the joule.
Latent heat has the ability to do something in a given time period. Take a water heated radiator, latent heat has the ability to make the radiator warm or hot according to the temprature of the water. It will continue to do this until the water stops flowing through the radiator and the radiator beg…ins to cool. ( Full Answer )
the heat which is going into ice but not increasing its temperature,is the energy required to change the state of ice from solid to liquid called latent heat of fusion
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 co…ntrast 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 ( Full Answer )
When a substance is below the triple point, the equilibrium will be between solid and vapor rather than solid/liquid or liquid/vapor. Sublimation is the direct change from solid to vapor without any intermediate phase change. The latent heat of sublimation is the energy required to change a given qu…antity of solid into the vapor at equilibrium. It is analogous to (but not the same as) latent heat of melting (energy required to melt the solid to liquid) and latent heat of vaporization (energy required to change a liquid into a gas). ( Full Answer )
The amount of heat energy required to solid substance solid into aliquid state without any changes in temperature ______________________ Apex: The amount of energy required to turn a mole of a solid intoa liquid
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 . propylene (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 usual…ly 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 ( Full Answer )
The amount of energy required to turn a mole of a liquid into a gas
dimensions are just the measurements of Length, width and Height so i think to measure the dimension you just measure the object and record the distance
No, latent heat can never be zero.Because latent heat is the hidden heat so there has to be heat more than zero.
Calculating heat absorbed or released when any gas / liquid transformation takes place. . I'm not an engineer, but I would imagine these calculations are performed in designing steam plants to make electricity. Water must be boiled, the steam runs thru a steam turbine, then it is condensed into wa…ter and is recycled ... boiled to steam ... thru turbine ... condensed etc. ( Full Answer )
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 the liquid state. This would also be the heat given out by a unit mass of the liquid when it changes to the solid state.
Latent heat is the amount of energy that is needed to change the state of matter. Either from a solid to a liquid, from a liquid to gas or vice versa. For example if you boil a kettle of water, energy or latent heat is added to the water from the element within the kettle. The water will heat up and… eventually turn to steam. ( Full Answer )
There is so-called latent heat involved in various chemical andphysical changes. Let's just consider one of these, the change fromthe liquid to the solid state. When you cool a quite small volumeof water towards the freezing point the temperature stop decreasingat the freezing point until that water… has given up all of itslatent heat of fusion . As soon as this happens thewater will become ice and its temperature will continue to declineagain. ( Full Answer )
The latent heat energy levels refers to the heat absorbed during achange phase at a constant pressure and temperature.
Latent Heat is the amount of heat transfer during a phase change,like when ice melts or liquid water boils to steam. The temperatureis constant during this change. The amount of heat depends on theparticular substance and the mass of substance. The units of LatentHeat property are something like cal…ories per gram, orkiloJoules/kg. So it is Energy over mass. Since energy is(force)*(length) which is (mass)*(length^2) / (time^2), dividing bymass leaves us with (Length^2) / (Time^2), or (Velocity)^2 , which is interesting . ( Full Answer )
The amount of heat required to melt a solid material into liquid (say ice into water) without any rise in temperature is known to be the latent heat of fusion or latent heat of melting.