Liquid does not need to be heated to evaporate. This should not be confused with boiling when heat is certinly required. In a liquid, all the particles have a range of ener…gies; some are stationary and some are moving very quickly. This quicker ones may have enough energy to overcome the energy holding them in the liquid (intermolecular forces such as Van der Waals). When these higher energy molecules leave, the lower energy molecules still remain and so the average energy of the molecules decreases. This registers as a drop in temperature. When you get Acetone (nail varnish remover) on your hand, you should be able to feel this effect. It is also what causes you to feel cold after leaving a swiming pool on a hot day. I hope you found this useful ANSWER The physical states of matter depend on the amount of energy holding the matter in a certain state versus the amount of energy in the substance that makes the molecules try to escape (and evaporate). Basically, energy is required for evaporation to take place. This is why evaporation causes the cool feeling on your body as you dry off. The water just takes energy (heat) from your body to help push the molecule out of liquid solution. Remember that pressure (generally from the atmosphere) is what holds a liquid in the liquid state. If you remove the pressure of the atmosphere from just about any liquid, it will vaporize whether more energy is added to the liquid or not. Unless the liquid is already at nearly absolute zero, it will have enough heat energy to evaporate in the absence of air pressure holding it in the liquid state. A quick, one sentence answer to this question: Evaporation will COOL the liquid off. Evaporation will cause heat energy to be removed from somewhere (generally the liquid from where the molecule evaporated from). Answer by brand new09 Well, according to the question it can be concluded that when a liquid is boiling and the water molecules are gaining excess energy, eventually excited to evaporate in the atmosphere. The affects are not much because the liquid's temperature is already high to boil the liquid. Evaporation is the process when a liquid get extra energy to energize the water molecules (H20) to gain energy to change their form to gas to escape into the atmosphere. The temperature of the liquid will will cool down as the molecules escape with the extra energy to change their form to gas.
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 vapo…rization. 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.
If the oxygen is initially a different temperature than the room temperature, then it will eventually cool down or warm up to be the same.
It depends on what is evaporating, the substance in question.
Oxygen can be any temperature.
Water evaporates much more quickly at higher temperatures, but some evaporation will take place at ANY temperature.
Warm or hot water because if you've ever noticed steam coming off food or boiling water, it is actually evaporation.
It is the hot molecules that escape first. Remember that Temperature is the average velocity of the molecules. Some are fast, and some are slower. The faster ones are able… to break free, and the average temperature thus drops. (read that carefully) And this will continue till all the molecules with sufficient energy have broken free.
Oxygen can be almost any temperature.
about 5087 degrees Fahrenheit
At any ambient temperature. Explaination for school kid Evaporation of water is different from concept of boiling. Air can uptake small amount of water and long as the air is …not saturate, it will drawn any liquid water to fill the content. Dry skin over cold day was due to this evaporation. The hot and humid day cause sweat because the air is filled with water and our sweat can't evaporate. Scientific explaination Evaporation take place when the partial pressure of water (water content) in air is less than the vapour pressure of water. The vapour pressure is depending on temperature. With rising temperature, vapour pressure is higher and when the vapour pressure equal to atmospheric pressure, all water will change to gas and that is the boiling. Though the temperature is at ambient but if the water content in air is less than the vapour pressure, the water still evaporate at ambient temperature.
water evaporates anywhere that has some sunlight. its not really true that it has to be really hot for water to eveaprate. Sunlight really doesn't have much to do with evap…oration other then heat. 2 ways evaporation happens, 1. By absorption. This is one way evaporation can happen when things, like air and water, are contained in the same space (water out in a open container). Air actually absorbs the water molecules and the moisture content of air is referred to as humidity. Warmer dry air absorbs moisture fastest and cool "damp" air absorbs it slowest. 2. By boiling, this is the only way evaporation happens if there is only one fluid substance. for example, if you had water in a container and put a vacuum on it to 18000 microns (microns is a way to measure vacuum, 0 = a perfect vacuum = there is nothing in that space. 18143.7 = water boils at 69 Fahrenheit. 759,993.4 = atmospheric pressure = water boils at 212) if you had the water in a room that was warmer then 69 and a vacuum of 18000 microns the water would boil and evaporate, there would be no air in the container. Similarly if you have water on your stove at atmospheric pressure (normal air pressure) you would boil at 212, and the water temperature would stay at 212 until the water was all gone. That is evaporation by boiling and for water at 212 it takes 970 BTUs/lb
Evaporation occurs at all temperatures, there is no set temperature for evaporation. The temperature would only affect the rate at which the liquid is evaporated - all other t…hings being equal, warmer temperatures encourage faster evaporation. Evaporation will proceed much faster still if the surrounding air is very dry, and in constant motion.
You Don't. You need higher amounts of Oxygen at higher temperatures.