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What is the resultant concentration when a #30mL# of a #2.0molL^-1# are diluted to a new volume of #150mL#?

Answer 1

#"Concentration"="Moles of solute"/"Volume of solution"#

And all we need to do is calculate the quotient:

#(30xx10^-3*Lxx2.0*mol*L^-1)/(150xx10^-3L)=??mol*L^-1#.

This is dimensionally consistent; #(30*mLxx2.0*mol*L^-1)=(30xx10^-3Lxx2.0*mol*L^-1)# gives me an answer in #mol#. And, the quotient gives me an answer in #mol*L^-1#.

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Answer 2

Avery Adams

The resultant concentration after dilution is 0.4 mol/L.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

What is the resultant concentration when a #30*mL# of a #2.0*mol*L^-1# are diluted to a new volume of #150*mL#?

What is the resultant concentration when a #30mL# of a #2.0molL^-1# are diluted to a new volume of #150mL#?