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Topic: Calculate the Concentration  (Read 2087 times)

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Offline viet

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Calculate the Concentration
« on: March 06, 2013, 11:09:11 AM »
the total volume of the solution is 11 mL. The solution contains .100mL of C-14, .800 mL of water, 10 mL of scintillation cocktail and .100 mL CNCbl.
CNCbl is 1365 g/mol, the stock solution is 0.200 mM.

I need help calculating the concentration of CNCbl.
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Offline Borek

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Re: Calculate the Concentration
« Reply #1 on: March 06, 2013, 02:03:42 PM »
You have to show your attempts at solving the question to receive help. This is a forum policy.
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Offline viet

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Re: Calculate the Concentration
« Reply #2 on: March 06, 2013, 04:02:39 PM »
so here's what i did so far, not sure if its right.

0.200 mM = .0002 M

i used the dilution formula: M1V1=M2V2
so; 0.0002M x (1x10^-4 L)  = M x 0.011 L
solving for M2, i got 1.818 x 10^-6
« Last Edit: March 06, 2013, 04:14:56 PM by viet »
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Offline Borek

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Re: Calculate the Concentration
« Reply #3 on: March 06, 2013, 04:16:54 PM »
Wasn't that hard  :P
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Offline viet

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Re: Calculate the Concentration
« Reply #4 on: March 06, 2013, 04:28:56 PM »
think i made it harder than it is.
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