Question

If 12.5 moles of iron (II) sulfide are produced, how many moles of sulfur are needed? ______ Round to the nearest tenth and include units.

Answer 1

12.5 moles

Step-by-step 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.