Find drug weight from PPM and total quantity

3. Percent, Ratio, mg/mL, PPM, PPB 3.4) PPM and PPB 3.4.1) PPM, PPB - General

3.4.1.1) Drug weight from PPM and total Weight Easy 1


Total tried:       Correct:       Wrong:

How many milligrams of the active pharmaceutical ingredient will 31500 g of a preparation contain, if its strength is expressed as 25.3 PPM?


Click on the button below to see the answer and explanations


Notice: Undefined variable: input_value1 in /home/jshzub/web/rxcal.org/public_html/practice/practice/includes/body.php on line 220
lb equals 796.95 mg kg

    25.3 PPM means, there is 25.3 g of drug in each 1,000,000 g of the mixture.
    The total weight of the preparation = 31500 grams. Therefore, we can write:
    `(25.3 \quad g)/(1,000,000\quad g)=x/(31500\quad g) therefore x = 0.79695` g.

    Now, this g unit has to be converted to mg.
    `(1000\quad mg)/(1\quad g)= y/(0.79695\quadg) therefore y = 796.95` mg Ans.


Notice: Undefined index: TOTALTRY in /home/jshzub/web/rxcal.org/public_html/practice/practice/includes/body.php on line 675