1 Calorie per degree C. If room temp is 72 degrees C then 28 calories to get to boiling then the it takes 540 calories to water from liquid to gas, called the heat of vaporization. So add 540 to 28 and you get 568 calories.
That's the energy to convert 1g of water at room temperature to 1g of steam at 100deg C. And if your room temperature is really 72 deg C you are in trouble - more probably degrees Fahrenheit.
Many times, the units of energy are given in joules (J) and 1 calorie is equivalent to 4.184 joules. The specific heat of water is 4.184 J/g/deg, so to raise the temp of 1 g water from 25ºC to 100ºC will take (4.184 J/g/deg)(75 deg)(1g) = 314 J. Then to convert that 1 g of 100ºC water into steam, you need to use the ∆Hvap which is 2260 J/g. Thus, 2260 J/g x 1 g = 2260 J to evaporate the water. Total energy required is 314 J + 2260 J = 2574 J.
The latent heat of vaporisation for water is 2260 Joules per gram
Heat of Vaporization for water = 540 Cal/g
580 calories
The needed heat is 40,65 kJ/mol.
when the temprature is hot the substance will evaporate( the person that wrote this before is a dummy)
Water requires a lot of energy to raise its structure and to evaporate.
Heat It Up And Measure The Temperature. Are you serious? How does it evaporate not how you know it evaporates. The soda molecules have more KE or Kinetic energy, energy of motion. The molecules tend to break apart and fly apart.
The amount of energy needed to vaporize 175 g of water depends on the temperature of the water. However, we shall assume it is 100 degrees C. We multiply 175 by 539 and get 94,325 calories. (Notice the small c). We could express it as 94 Calories if we were talking about the stuff on your dining room table.
Water temperature tells you how cold or hot the water is. If the water is hot, the heat indicates the kinetic energy of the water.
These energy sources are the movement of water molecules and the temperature.
The water will slowly evaporate on its own at room temperature, but boiling temperature will do it much faster!
The temperature will rise, and the water will evaporate.
The surface molecules of the water will evaporate. As the kinetic energy increases the water molecules become more free, which causes the water to evaporate.
The needed energy at 100 oC is 48751 MJ.
Liquid water evaporates due to high temperature. Sun's energy help it to evaporate.
The kinetic energy of water molecules is lower at a low temperature.
Molecules have kinetic energy at any temperature.
You need the amount of water, the temperature of the water, and the desired temperature.
There is no such temperature to start evaporating. Even in the room temperature or in a refrigerator, water does evaporate. When a particular water molecule absorbs adequate energy (let's say from heat), there will be a phasechange in that molecule from liquid to gas, and it's called evaporation.
The energy of water molecules increase by a temperature increase and some molecules at the surface can escape in the atmosphere. But water is evaporated at any temperature.
When water molecules at the surface gain sufficient energy they can escape in the atmosphere. Evaporation (not vaporization) occur at any temperature; but a higher temperature increase the rate of evaporation. The energy of water molecules increase by a temperature increase.