Question

What will be the mass of ferrous sulphide formed when 20 gram of pure sulphur reacts with iron ?
What type of solid is Ne? Metallic? Molecular? Ionic? or Covalent Network?
Fe + S ==> FeS
mols S = grams/atomic mass S = ?
Convert mols S to mols FeS. Look at the equation. See that 1 mol S forms 1 mols FeS.
Then grams FeS = mols FeS x molar mass FeS.
I responded to your question above. Please don't post questions piggy back. Most of that type never gets and answer.

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