Trong các công thức hoá học sau đây, công thức hoá học nào sai?Sửa lại cho đúng: FeCl , ZnO2, KCl , Cu(OH)2, BaS, CuNO3, Zn2OH, K2SO4,Ca2(PO4)3, AlCl, AlO2, K2SO4, HCl, BaNO3, Mg(OH)3ZnCl, MgO2, NaSO4, NaCl, Ca(OH)3, K2Cl, BaO2, NaSO4, H2O, Zn(NO3)2, Al(OH)2, NaOH2, SO3, Al(SO4)2

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.