To produce the same energy, it takes 1.6 times more coal (by volume) than oil. how many gallons of oil will give you the same amount of energy as 450 pounds of coal. assume that 1 pound of coal has a volume of 0.14 gallons.

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.