A nurse is given an order to give diphenhydramine 25mg IVP s…

A nurse is given an order to give diphenhydramine 25mg IVP stat. They have available a 50mg/mL vial of diphenhydramine and know that they must dilute the dose prior to administration. According to hospital policy they must dilute the diphenhydramine to 5mg/mL with a sufficient volume of NS. How many milliliters (mL) of NS must the nurse add to the diphenhydramine dose to dilute it to 5mg/mL? Please round the final answer to one decimal place, except no trailing zeros.   [x] mL