A rock is dropped into 15 mL of water. It displaces 10 mL. The volume of the rock is: A. 10ml
B. 25ml
C. 5ml
D. 15ml

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?

What’s a special glass that most beakers are made of

What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol