If there are 3.45 moles of acetic acid (c2h4o) in a bottle of vinegar, how many molecules would be in this bottle if you counted them?

multiply the number of moles by the avogadro number (6.022 x 10^22) to get number of molecules

"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."