when 2.31 moles of sulfur hexafluoride are synthesized from te elements, how many grams of fluorine were used PLEASEEEEE HELPPPP MEEE!

S + 3F2 ==> SF6

2.31 mols SF6 requires 2.31 mols S and 3*2.31 mols F2.
grams = mols x molar mass.