J.R. S. answered 11/15/23
Ph.D. University Professor with 10+ years Tutoring Experience
C6H6(l) + C3H6(g) + O2 ==> C6H6O(s) + C3H6O(l) ... balanced equation
molar mass C3H6O = 58.08 g / mole
moles C3H6O produced = 134.5 g x 1 mol / 58.08 g = 2.316 mols C3H6O
moles O2 needed = 2.316 mols C3H6O x 1 mol O2 / 1 mol C3H6O = 2.316 mols O2 needed
At STP 1 mole of any ideal gas = 22.4 L
Liters of O2 needed = 2.316 mols x 22.4 L / mole = 51.88 L of O2 gas needed