When a mixture of sulfur and metallic silver is heated, silver sulfide is produced. What mass of silver sulfide is produced from a mixture of 3.0 g Ag and 3.0 g S8?

Question

16 Ag(s) + S8(s) > 8Ag2S(s)

Answer 1

This is a limiting reagent problem. Here is a worked example.
http://www.jiskha.com/science/chemistry/limiting_reagent_problem.html