Given the reaction: 2 Mg(s) + O2(g) ⇨ 2 MgO(s) List four ways that you could speed up the rate of the reaction:

How many moles are in 43.9 l of oxygen

If an atom has 12 protons and 13 neutrons

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.