Concentrations of chemicals

timer Asked: May 11th, 2015

Question description

Hi I was confused about making different concentration solutions.

I have 5 mM stock of a drug and want to add different concentrations of it to a 500 uL sample of cells. here are the concentrations: 0 mM, 1 mM, 5 mM, and 10 mM.

My professor said 1 uL of the 5 mM stock to the 500 uL cells will make a 10 mM concentration. Can you explain how she got that? Thanks!

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