Thread: Chemistry question :)
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Old 27-02-2004, 22:18   #19
Theodoric
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Re: Chemistry question :)
Quote:
Originally Posted by Xaccers
Didn't know where to put this so feel free to move it

Here's something to frazzle your brains

You are provided with a solution containing 50ppm chloride ions. How many mls of this should be taken and diluted to produce 100ml of a 2.5ppm solution?
It needs to be diluted by a factor of of 50/2.5 = 20. 1/20 of 100 is 5. So, take 5 ml of the 50 ppm solution and dilute to 100 ml.
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