Question

An ampoule contains a solution of drug of 150micrograms per 2.5mililitres.convert this dose to grams per litre

Answer 1

$$\frac{150\:\rm \mu g}{2.5\:\rm mL}=\frac{150*10^{-6}\:\rm g}{2.5*10^{-3}\:\rm L}=0.06\: \rm g/L$$