Which of the following will have the highest vapor pressure? (a: 1.0 m nacl (aq)) (b: 1.0 m mgcl2 (aq)) (c: 1.0 m c12h22o11 (aq)) (d: pure water)

Its d Pure water Because i said so but this is the epic explanation " Correct. Raoult's law describes how adding solute particles lowers the vapor pressure of the solution. Therefore, the pure solvent will have a higher vapor pressure than the solution. Click Next to continue."

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.