CHOOSE ALL THE ANSWERS THAT APPLY. Which of the following equations are balanced?
O 2Fe + Cu(NO 3) 2 → 2Cu + Fe(NO 3) 2
O 2K + 2H 2O → H 2 + 2KOH
O Li + Cl 2 → LiCl
O 2H 2 + O 2 → 2H 2O
O 2S + 3O 2 → 2SO 3