When copper reacts with sulfur at high temperature, copper(I) sulfide is formed. 2Cu(s) + S(s) $\rightarrow$Cu₂S(s) If the mass of the Cu₂S formed is 1.17 g, what mass of copper should have reacted?

Question

Quizplus · Accepted Answer

The molar mass of Cu2S is 159.16 g/mol, and the molar mass of Cu is 63.55 g/mol. The reaction shows that 2 moles of Cu react with 1 mole of S to form 1 mole of Cu2S. Therefore, the mass of copper needed is (2 * 63.55/159.16) * 1.17 g = 0.934 g.

When Copper Reacts with Sulfur at High Temperature, Copper(I) Sulfide →\rightarrow→

When Copper Reacts with Sulfur at High Temperature, Copper(I) Sulfide $\rightarrow$