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Quick Conversion Question

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  • 03-04-2017 8:14pm
    #1
    wardroberaider
    Registered Users Posts: 3 ✭


    If I have 50mg.dm^-3 (yes that is to the negative3)
    do I have 50mg per mL???

    ive never seen dm to the negative power before so my assumption is its 1000ml to the negative 3 so 1ml?

    Thanks in advance for any help


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    #2
    Bit cynical
    Registered Users Posts: 2,338 ✭✭✭Bit cynical


    wardroberaider wrote: »
    If I have 50mg.dm^-3 (yes that is to the negative3)
    do I have 50mg per mL???

    ive never seen dm to the negative power before so my assumption is its 1000ml to the negative 3 so 1ml?

    Thanks in advance for any help

    How I would do it:

    1 cubic decimetre (dm^3) = 1 litre.

    50 mg dm^(-3) = 50 mg per dm^3 (that is the meaning of the negative power).

    Therefore you have 50mg per L.

    In terms of mL:

    1000 mililitres in a litre therefore you have 50/1000 = 0.05 mg per mL.


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