Label each figure below as a physical or chemical change and explain how you know in complete sentences. Use the indicators of a chemical reaction to support your answer Figure : H 2 O(g) H 2 (g)+O 2 (g) Figure 2: H 2 O(g)**>H 2 O(l)

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?

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?