Which statement best explains the octet rule? atoms gain, lose, or share electrons to achieve a full valence shell. compounds always consist of eight electrons. molecules always consist of eight atoms. all atoms require eight electrons to form bonds.

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Which statement is best described as a atom

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.