If i use evaporation to clean water, how can i tell if it is any cleaner?
95618
basically you're talking about distilling water, which is a purification technique.  collect the water vapor and let it condense. the result is pure water.
1019772
Put a bucket of water out in the blazing hot sun in the morning then come back and check on it in the evening. Everybody can clearly see that there is less water then before. That's because the undetectable, invisible pink elephant came along and drank some because it was so damn hot! \n\nPeople will try to tell you that the water "evaporated", but you have to explain to those poor fools that evaporation is the devils trick. Like evolution or gravity. The devil harvest souls by convincing people that this "evaporation" is real! Once you educate them on all the devils evil tricks and lies, you should have no problem proving to these people that undetectable, invisible pink elephants exist.
149000
maybe like salt crystals diluted in water and then when you paint on paper with that water and let the water evaporate, the salt crystals are left behind on water. you can see it. just an idea? \nlike when water evaporates, all teh minerals in water are  left behind. so when you boil water and hold the lid above the steam, the droplets that form on the lid is pure H2O, because all teh minerals are left behind in the pot.
1175579
you need chlorine and need to check the ph and chlorine levels...you also need a vacumm to suck up all the crap that might fall in. if it has tiles a tile scrub, go to a store that sells that kind of stuff and ask!! good luck though!
761616
One that will ideally:\n1) dissolve the component that you wish to collect but not the others. Then you can do a filtration, collect the filtrate and evaporate off the solvent to get back the component that you want.\nOR\n2) dissolve all those that you don't wish to collect but not the component that you want. Then you can do a filtration and collect the component that you want as the residue.\n\nHope this helps :)
628336
as opposed to polluted water?
83823
If you mean is all clear, cold, colorless water good for the purification process to become drinking water, then your answer is not always.  There are many clear and colorless chemicals that can make it through the purification process with out being removed.  A series of tests should be administered to the water to find out exactly what's in there so that the appropriate purification process can be applied.
1017020
use a screen cleaner liquid solution
1010302
It depends on your source of water.  Rainwater, wastewater, pond water, and well water all go through different steps.\n\nThe things that need addressed in one manner or another are particulates (usually cleaned out by a filter in the beginning stages of the process), bacteria and larger life forms (also many of which can be be filtered out with finer filters), and chemicals (usually removed by reverse osmosis or by charcoal or some other cleansing chemical process).\n\nThere are a lot of sources out there.  I have listed a few of them below.  Good luck.
671685
USadvanage wonder cleaner, or an equivalent citrus cleaner should work.
131699
Heat the crystals. If it  has water of crystallisation then it will eventually leave the substance. Collect any vapours using a liebig condenser then determine if that is water. Problem is, if you heat it, will it decompose?
757850
use multiple effect evaporator.\nhttp://www.answers.com/topic/sugar
928091
In general the temperature of the water has very little impact on the temperature reduction due to evaporative cooling.\n\nAs to how cool you can get the air. If you have sufficient contact between the air and water, you should be able to approach the wet bulb temperature of the air but since the contact is not 100% efficient you will never reach the wet bulb temperature.\n\nI don't have a chart handy but you should be able to determine the wet bulb temperature that corresponds to 23% humidity.
387296
There are multiple ways to separate sand and water.  If you need the sand, you evaporate the water away.  If you need the water, you run it through a filter.  If you need them both, a centrifuge can fairly completely separate them by allowing the sand to be forced to the bottom.
514650
No. Generally water that is distilled and/or deionized will still read as a pH  of 6 or 7 due to the Bohr effect. Basically the Carbon Dioxide concentration in the atmosphere reacts with the surface of the water and through mulitple reactions lowers the pH of the water by increasing the H+ concentration.\n\nTherefore if your are reading and conducting an experiment and it does not explicitly say to conduct it in a vaccum then that water should be fine.
558007
Evaporation is a process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state. \n\nThe rate of evaporation depends on a number of factors:\n1. Concentration of the substance evaporating in the air: If the air already has a high concentration of the substance evaporating, then the given substance will evaporate more slowly. \n2. Concentration of other substances in the air: If the air is already saturated with other substances, it can have a lower capacity for the substance evaporating. \n3. Concentration of other substances in the liquid: If the liquid contains other substances (such as salts), it will have a lower capacity for evaporation. This is due to Raoult's law. \n4. Temperature of the substance: If the substance is hotter, then evaporation will be faster. \n5. Flow rate of air: This is in part related to the concentration points above. If fresh air is moving over the substance all the time, then the concentration of the substance in the air is less likely to go up with time, thus encouraging faster evaporation. In addition, molecules in motion have more energy than those at rest, and so the stronger the flow of air, the greater the evaporating power of the air molecules. \n6. Inter-molecular forces: The stronger the forces keeping the molecules together in the liquid or solid state the more energy that must be input in order to evaporate them. \n\nNow one can understand why evaporation of water increases in sunshine. It is primarily because of the increased temperature and probably also due to the increased flow of air during sunshine.
789020
moisture\nsoap\ntoner\ncleanser\nvitamins