1.883 Grams of copper reacted with excess sulfur to form an unknown Copper sulfide. The reaction creates 2.308 grams of an unkno
wn Copper Sulfide. What I am trying to find Is the empirical formula of the Copper Sulfide. It is either, Copper(I) Sulfide or Copper(II) sulfide. I don't need the answer but rather an explanation of how to solve this problem.