Please help ASAP! How many molecules of C3H7Cl would be produced if 400 grams of propane (C3H8) reacted with excess chlorine gas according to the equation below:
2C₃H₈ + Cl₂ > 2 C₃H₇Cl + H₂

some of the qualities most frequently associated with the baroque are grandeur, sensuous richness, drama, vitality, movement, tension, emotional exuberance, and a tendency to blur distinctions between the various arts.

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.