Convert mg per mL into ratio expression

3. Percent, Ratio, mg/mL, PPM, PPB 3.3) mg/mL 3.3.1) mg per mL - General mg per mL - General Normal 1

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If the strength of a solution is written as 2.778 mg/mL, then how will it be expressed in ratio strength?

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lb equals 1 : 360 kg

    2.778 mg/mL means, the solution contains 2.778 mg of drug in each 1 mL. In order to express the ratio strength, we must keep the numerator in gram unit, also, the numerator should be equal to 1.
    Since 1000 mg equals 1 g, we can write 2.778 mg as 0.003 g. Thus, for this solution, we can write:
    `(0.002778\quad g)/(1\quad mL)=((0.002778/0.002778) \quad g)/((1/0.002778) \quad mL)`
    `=(1\quad g)/(360\quad mL)`.
    This is equivalent to 1 : 360. Answer.

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