A 6.0 L balloon is at a temperature of 273 K. When the balloon is heated to 323 K, what is the volume at constant pressure? * 7.10 L
2.37 L
4.50 L
1.93 L

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.