Answer:
12.5 moles
Explanation:
Given parameters:
Number of moles of FeS = 12.5moles
Unknown:
Number of moles of sulfur needed = ?
Solution:
We have to solve from the known to the unknown using a balanced chemical equation at first.
The balanced chemical equation for this reaction is:
Fe + S → FeS
The reaction is made possible when iron is heated in the presence of sulfur.
we see that;
1 mole of sulfur produced 1 mole of FeS
x mole of sulfur will produce 12.5moles of iron sulfide;
Therefore, 12.5 moles of sulfur will produce that given amount of iron sulfide.
