1. the heat of fusion for the ice-water phase transition is 335 kj/kg at 0°c and 1 bar. the density of water is 1000 kg/m3 at these conditions, and that of ice is 915 kg/m3. develop an expression for the change of the melting temperature of ice with pressure. use this to compute the freezing point of water in denver, co where the mean atmospheric pressure is 84.6 kpa

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.