A solution consisting of 285 mg of dopamine in 30 mL of solution is administered at a rate of 8 ​ml/hr. What is the flow rate in mg of dopamine per hour

Answer 1

This is a matter of conversions and using dimensional analysis.

285 mg/ml x 1 ml/8 hr = 35.6 mg/hr = 36 mg/hr (to 2 sig. figs.)