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Topic: Concentration  (Read 3213 times)

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Offline soupastupid

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Concentration
« on: May 16, 2010, 03:02:20 PM »
A liter of CuCl2-water solution which contains 1.0 mg of CuCl2 has a concentation of CuCl2:

a. 1 ppb
b 1 ppm
c 1 ppt
d 1%
e 10%
how do i do this problem?

1mg/1L ??
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Offline Borek

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Re: Concentration
« Reply #1 on: May 16, 2010, 03:41:48 PM »
What does it mean "1 ppm"?
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Offline soupastupid

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Re: Concentration
« Reply #2 on: May 16, 2010, 03:45:23 PM »
part per million
part per thousand
part per billion

wtf right?
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Offline Borek

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Re: Concentration
« Reply #3 on: May 16, 2010, 05:52:07 PM »
What is mass of 1L of water?
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Offline soupastupid

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Re: Concentration
« Reply #4 on: May 16, 2010, 07:23:02 PM »
????

1 L of water??

i need to have temperature if i wanted to figure out how much it weighs right?
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Offline Borek

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Re: Concentration
« Reply #5 on: May 17, 2010, 03:02:09 AM »
Depends on how precise you want to be. As a first approximation 1L of water always (almost by definition) weights the same.

You were very close to the answer in your first post.
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