A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 2.0 L.What is the final concentration of the solution?
A) 0.22 mM
B) 220 mM
C) 22 mM
D) 25 mM
E) 2.5 mM

Name: A student adds 0.250 L of 200 mM buffer stock solution to a volumetric flask and dilutes the stock to 2.0 L.What is the final concentration of the solution? A) 0.22 mM B) 220 mM C) 22 mM D) 25 mM E) 2.5 mM
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The Answer is D

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