Can someone please help me

Anurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. if the stock bottle is labeled 25 mg/ml and the order is a dose of 11.0 mg , how many milliliters will the nurse draw up in the syringe?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon