No ordinance, resolution or bylaw shall contain more than one subject, which shall be clearly expressed in its title. No bylaw or ordinance, or section thereof shall be revived or amended, unless the new bylaw or ordinance contains the entire bylaw or ordinance, or section, revived or amended, and the bylaw or ordinance or section, so amended shall be repealed.  Each such bylaw, resolution or ordinance shall be adopted or passed by a separate vote of Council and the "yeas" and "nays" shall be entered upon the journal.
(ORC 731.19)