Which of these solutions is the most acidic? A. [H30+] = 4 x 10-4 M
B. [H30+]= 6 x 10-6 M
C. [OH-] = 3 x 10-3 M
D. [OH-] = 2 x 10-12 M

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Which statement names the physical property of wood a. wood is softer than coal b. wood does not rust c. wood can rot d. wood can burn

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?