Final Concentration: 40 µMol from .01mL Stock Solution

[NCollege4Life]

if i have a 40 micromolar concentration of stock solution and add .01 mL of that solution to .98mL of water, what is my final concentration.

Thanks for any help!

 

[sjb-2812]

if i have a 40 micromolar concentration of stock solution and add .01 mL of that solution to .98mL of water, what is my final concentration.

Thanks for any help!

What is the final volume of your solution?

 

[NCollege4Life]

sorry! .99 mL

 

[Borek]

Does the number of moles in the final solution differ from the number of moles in initial solution?

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methods

 

[NCollege4Life]

no, same

 

[NCollege4Life]

so any help?

 

[w3390]

Use the equation relating the initial molarity to the final molarity and volume:

M1V1 = M2V2

 

[Borek]

so any help?

My question was a hint. If amount of substance have not changed, why don't you calculate initial amount of substance and use concentration definition to calculate final concentration?

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methods