J.R. S. answered 11/08/20
Ph.D. University Professor with 10+ years Tutoring Experience
Sulfur dioxide = SO2
Oxygen = O2
Sulfur trioxide = SO3
Write the balanced equation:
2SO2(g) + O2(g) ==> 2SO3(g) ... balanced equation
..xs..........26.9g..........? g.......
We convert everything to moles, conduct dimensional analysis, and convert back to grams.
26.9 g O2 x 1 mol O2/32 g O2 x 2 mol SO3 / 1 mol O2 x 80 g SO3/mol SO3 = 135 g SO3