What is the molarity of 68.3 % by mass of NaNO3 aqueous solution (density of solution = 1.4 g/ml )

you gotta add the following molecules so we can give u an answer

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.