Question

What is the melocular mass of iron 2sulphide

Answer 1

87.92 g/mol is the molecular or molar mass of Iron (||) sulphide - FeS

Answer 2

Molar mass of FeS = 87.91 g/mol

Convert grams Iron(II) Sulfide to moles  or  moles Iron(II) Sulfide to grams

Molecular weight calculation:

55.845 + 32.065

Percent composition by element

Element   Symbol   Atomic Mass   # of Atoms   Mass Percent

Iron Fe 55.845 1 63.525%

Sulfur S 32.065 1 36.475%