How many grams of sulfur in 4.20 x 1021 atoms of sulfur?

answer; /// i do believe that the correct answer is (a) boiling

answerlinnaeus;

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.  

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.