Question

How many moles of copper Il sulfide can be produced from 2.8 moles of sulfur? Cu + S --> CuS​

Answer 1

Answer: 2.8 moles of copper (Il) sulfide $(CuS)$ will be produced from 2.8 moles of sulphur.

Explanation:

The balanced chemical reaction is:

$Cu+S\rightarrow CuS$  

According to stoichiometry :

1 mole of $S$ produce =  1 mole of copper (Il) sulfide $(CuS)$

Thus 2.8 moles of $S$ will produce=$\frac{1}{1}\times 2.8=2.8moles$ of copper (Il) sulfide $(CuS)$

Thus 2.8 moles of copper (Il) sulfide $(CuS)$ will be produced from 2.8 moles of sulphur.