Question

How many grams of potassium sulfide are produced from the reaction of 1.23 moles of potassium with sulfur?

Answer 1

Write the equation and balance it.
16K + S8 ==> 8K2S

Convert mols K to mols K2S.
1.23 mols K x (8 mol K2S/16 mols K) = ?? mols K2S.