Modify the structures of aspartic acid to show its structure at each pH. You may need to add or remove atoms or bonds, and you will need to add charges where appropriate. Include hydrogen atoms.

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

What is an example of a physical property?