Chromatography portfolio

5. what evidence is there that marker ink is a mixture?
6. each compound in the marker ink is represented by a color. did one compound travel farther than others? explain why you think that this is the case.
7. did the compounds travel farther in water or isopropyl alcohol (rubbing alcohol)? explain why you think that this is the case.
8. how could you improve upon the accuracy of your r[f] measurements?

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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.