Using the volumes of sodium thiosulfate you just entered, the mass of bleach sample, and the average molarity of the sodium thiosulfate solution entered earlier, calculate the mass percent of NaClO for each bleach sample. Enter the calculated mass percent of NaClO in each of the 3 acceptable trials. Be sure to enter your mass percent values in the corresponding order that you entered your masses of your bleach samples and volumes of your sodium thiosulfate previously. The bleach sample mass you entered for entry

that's what i got you can count the number of atoms

level 4 to level 2 : ))

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.