Question

A physician has ordered 0.50 mg of atropine, intramuscularly. If atropine were available as 0.25 mg/mL of solution, how many milliliters would you need to give?

Answer 1

If 0.25mg of atropine is in 1mL
                  so
    0.50mg of atropine is in x

$x=\frac{0.5mg*1mL}{0.25mg}=2mL$