Question 2 3 pts
In the reaction 2C2H6 + 702 --> 4CO2 + 6H20
If 955.291 grams of oxygen are used how many grams of water will be made? (Put down only the
number of grams with the correct number of significant figures but no units. The significant figures
will be limited by the periodic table. Make sure to use the Periodic table from the course.)

it is b that is the answer.

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.