Answer
100 drops/min
Work Step by Step
Flow rate is expressed as drops per minute. Use conversion factors (equal ratios) to convert the given values.
$\frac{2\ L}{5\ hr}=\frac{2\ L}{5\ hr}\times\frac{1000\ mL}{1\ L}\times\frac{15\ drops}{1\ mL}\times\frac{1\ hr}{60\ min}=\frac{30000\ drops}{300\ min}=\frac{30000\div300\ drops}{300\div300\ min}=\frac{100\ drops}{1\ min}$
