deteremine the ph of a solution that results from the reaction of 75.0 ml 0.135 m hydrobromic acid with 95.0 ml of 0.115 m potassium hydroxide.

a. hope i'm right

explanation:

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.