Question #11778

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Answer 1 · 2015-01-27T00:16:10

The concentration of PNP = #69.4muM#

#c=n/v#

#c# = concentration

#n# = no. moles

#v# = volume

So #n=cv#

In dilution problems like this the total amount of material stays the same, you are just diluting it.

A useful expression is:

#C_1V_1=C_2V_2#

So #C_2=(C_1V_1)/(V_2)=(0.5xx125)/((775+125))=0.0694mM=69.4muM#