The reaction h2so4 + 2 naoh -> na2so4 + 2h2o represents an acid-base tritration. the equivalence point occurs when 24.75 ml of 0.2432 m naoh is added to a 38.94 ml portion of h2so4. what is the molar concentration of h2so4 expressed in m?

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.