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Calculating the amount of water reacted is simple with a scale. As long as the mass of the water before evaporation is measured, one can find the amount of water evaporated simply by measuring the mass of the water after evaporation and taking the difference of the mass. To convert this to volume, simply divide the mass by the density of water (typically 1g/cm3).
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoTo determine the heat of vaporization you must first determine the amount of heat the substance gave off to water by multiplying the mass of water by the change in temperature and the specific heat capacity of water. You need to divide this number by the number of moles of the unknown substance.
Wiki User
∙ 13y agoI 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 engineering: Calculation of latent heat usually done via fitting equation not from intermolecular force.
Wiki User
∙ 13y agoHeat of Vaporization formula
540 cal
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1g Heat = mass x heat of vaporization
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What does the latent heat of vaporization represent?
The amount of energy required to turn a mole of a liquid into a gas
Amount of heat necessary to change the state of substance?
Heat of vaporization or enthalpy of vaporization. It is the additional energy, per unit mass, required after vaporization temperature (boiling point) is reached, to accomplish the change in state, from liquid to gas.
What information does the latent heat of fusion give?
latent heat of fusion tells us about the amount of energy that must be taken off from water at 00C to fuse it into ice at 00C . Actually this in this phase temperature remains constant and this energy is (either latent heat of fusion or latent heat of vaporization is the potential energy which is possessed by the states by their virtue.
Could a heat pump work without the latent heat of vaporization?
There are probably several ways to build a heat pump; for example, a substance might be compressed and expanded. If latent heat is used, this is probably because it is easier and more efficient to build the heat pump that way.
When trees transpire releasing gaseous water into the atmosphere they can absorb heat from their environment and cool it down. What property of water is responsible for this activity?
Latent heat of vaporization.
The amount of energy needed to change a material from a solid to a liquid is the heat of what?
The latent heat of evaporation
What is the electrical method to determine the specific latent heat of vaporisation?
coclude the specific latent heat of vaporization
What is the latent of vaporization?
The latent heat of vaporization is what is commonly referred to as boiling. This is the amount of energy require to change from a state of liquid to vapor.
What does the heat latent heat of vaporization measure?
The energy required to boil a substance
What is the Latent heat of vaporization for ethyl acetate?
87.6kcal/kg
What step changes liquid water to water vapor?
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. The latent heat of vaporization at 1.0 atmosphere pressure is about 1000 Btu per lbm ( 2260 kJ per kg ).
What is the value of latent heat of vaporization of water?
2260 kJ/kg
How your body cooled when you perspire?
Perspiration coats the outside of the skin with moisture (water). The water evaporates. Evaporation requires heat to be absorbed by the water (the latent heat of vaporization). Heat is removed from the body surface to provide the water with the latent heat of vaporization.
Why does the temperature stops rising during melting and boiling point?
Because the latent heat of fusion and latent heat of vaporization are very high
What does the latent heat of vaporization represent?
The amount of energy required to turn a mole of a liquid into a gas
What appliances make use of latent heat of vaporization?
Refrigerator, freezer and air conditioner.
What does L mean in the equation Heat equals mL?
L can either mean the latent heat of vaporization or condensation. The latent heat of vaporization is the energy required to completely turn 1 kilogram of a liquid into a gas at its boiling point. The latent heat of condensation is the energy required to completely turn 1 kilogram of a solid into a liquid at its melting point.
