Answer to Question #3184 in Inorganic Chemistry for haley

Question

50g Fe[sub]2[/sub]O[sub]3[/sub] x 1mol/159.7g x 6HCl& & & /& & & & 1Fe[sub]2[/sub]O[sub]3[/sub] x 36,46g/1mol =68.49g HCl

the balanced chemical equation is given Fe[sub]2[/sub]O[sub]3[/sub] + 6HCl --> 2FeCl[sub]3[/sub] + 3H[sub]2[/sub]O

Where does the 159.7g come from ??

Answer 1

Your question is not clear. May be it's the molar mass of Fe2O3:
M(Fe) = 55.85 g/mol,& M(O) = 15.99 g/mol:
M (Fe2O3) = 55.85*2 + 15.99 *3 = 159.7 g/mol