Answer:
[tex]m=0.15mg[/tex]
Explanation:
Hello!
In this case, since the concentration of the fluoride ion in the vitamin drug product is:
[tex]0.25\frac{mg}{mL}[/tex]
Now, since the used volume of product was 0.6 mL, the following grams are going to be present:
[tex]m=0.25\frac{mg}{mL}*0.6mL \\\\m=0.15mg[/tex]
Best regards!