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Really need help with this pharmacy calculation (Year one pharmacy) watch

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    Hi guys, some of you might think this is really silly but if someone can please give me some help with this question I would really appreciate it!

    Potassium permanganate 0.1g
    Purified water to 100mL

    How many millilitres of a 2.5% potassium permanganate solution could be used in place of the 0.1g in the above formula?
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    i think yu can use C1v1 = c2v2


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    (Original post by EmilyRose97)
    Hi guys, some of you might think this is really silly but if someone can please give me some help with this question I would really appreciate it!

    Potassium permanganate 0.1g
    Purified water to 100mL

    How many millilitres of a 2.5% potassium permanganate solution could be used in place of the 0.1g in the above formula?
    2.5% solution contains 25g per litre

    You need one tenth of one twenty-fifth of a litre to obtain 0.1g
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    Thank god I didn't do pharmacy

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Updated: October 19, 2015
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