On the weak base/strong acid titration curve below, label the following points. a) The point where the pH corresponds to a solution of the weak base (B) in water. b) The point where the pH corresponds to a solution of the conjugate acid (BH +) in water. c) The point where pH=pKa (for BH+).

b. examine and describe cells

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.