Tuesday, September 6th, 2011 at
2:12 pm
Can chemical rains contaminate spring water? The water that is sold as a branded water, such as Avian. And by chemical rains I mean the rains that come from where the chemical evaporation’s go and crap that goes directly from factories to the atmosphere.
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Friday, March 19th, 2010 at
12:25 am
We have a 33 feet by 18 feet above ground oval pool which we filled the pool 2 weeks ago. When we turned on the pump yesterday, the water level was down about an inch, which resulted in lots of bubbles in the water that was going back into pool.
We now realize that the water level should be a little higher when we fill it up.
How much evaporation is normal for a pool that large?
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Friday, February 12th, 2010 at
5:14 am
I have to do a lab in which I must separate sugar and water. The sugar is completely dissolved in water and I after the separation, I the water has to be in its liquid state, therefore, i can not use evaporation. I must perform it in a high school laboratory, so please state what materials do i have to use to do such a thing.
Thanks
PEACE
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Sunday, November 22nd, 2009 at
11:26 am
1. A pure substance that decomposes gently when heated would be classes as:
a. an element
b. a metal
c. a non-metal
d. a compound
e. a mixture of elements
Which of the following processes could best be used to obtain pure water from a solution of sodium chloride and water?
a.Chromatography
b.Filtration
c.Decantation
d.Distillation
e.Evaporation
Which one of the following processes would be the most suitable for separating the different dyes from a sample of black ball point ink?
a. Chromatography
b.Distillation
c.Evaporation
d.Filtration
e.Decantation
A beaker of muddy water contains only dissolved salt and some suspended materials. Which one of the following procedures would be the best way to recover the pure salt?
a.filter first, then decant
b.decant first then filter
c.evaporate first, then filter
d.evaporate first, then decant
e.filter first, then evaporate
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Saturday, October 3rd, 2009 at
9:04 am
I am just wondering is it possible to get pure water by evaporation and condensation using sun rays by using good mirrors and good design. So that we can get enough drinkable water without having to rely on the water filters and other purification devices. Please help me out in telling how much can we purify in a day of sunshine.
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Monday, August 31st, 2009 at
12:00 pm
I know that maybe in a city with pollution, when the evaporated water comes down, it may not be pure due to pollution. But my question is in a controlled environment, does water that is evaporated into gas form, and then back into water, how pure will it be? Is there anything in water that can remain with it in its gas form?
If there is something that travels with it even through evaporation, is this water as pure as lets say commercially filtered water?
Please back up your answers if you can.
Thanks
Water vapor is the gas form of water.
H20 in gas form.
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