From your data, calculate the mole ratio of copper and sulfur in
copper sulfide as prepared...
米.Syntno s is cts Coppen. Sulfide: Coppec: a rvsty Colored Po w der suie light yellow Colored powder Miss of Cruible 27 294 Mass of CoppLL= 0.250g Mass of sulfur: o.17g Mqss of crucible gnd ProduC: 21-5 e l 9 MQss of Produt 0. 317 9 。Winon the Coppen gnd svifur Were don. burning, it become homogen10 US Mixture of blqlk pgrtilles。