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chemistry

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20.0mls of a bulk solution was transferred to a 100ml volumetric flask and diluted to volume with water. 2.00mls of this solution was then found to have a concentration of 0.15M. What is the concentration of the bulk solution.
McVc=MdVd
(Mc)(.02L)=.15M(.002L)
Mc= .015M concentration of bulk solution

  • chemistry - ,

    well since its a solution, don't all the particles mix? in which case every sample, will have a concentration of .15?

    sorry if im wrong i barely passed basic chem, i suck.

  • chemistry - ,

    20.0mls of a bulk solution was transferred to a 100ml volumetric flask and diluted to volume with water. 2.00mls of this solution was then found to have a concentration of 0.15M/l. What is the concentration of the bulk solution.

    The bulk solution has been diluted from 20 ml to 100 ml, namely 5 times.
    The diluted solution was found to have a concentration of 0.15 M/l. Thus the bulk solution has a concentration 5 times higher, namely 0.75 M/l.

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