2 Which compound has covalent bonds? *
O (1) H20
(2) Li20
(3) Na, o
(4) K,0

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms