Aqueous solutions of a compound did not form precipitates with Cl -, Br -, I -, SO 4 2-, CO 3 2-, PO 4 3-, OH -, or S 2-. This highly water-soluble compound produced the foul-smelling gas H 2S when the solution was acidified. This compound is .

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?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

What shape would a molecule with two bound groups and two lone pairs have?