How do I do this Claus reaction

Question

The Claus reactions are used to generate elemental sulfur from hydrogen sulfide.

2H2S 3O2 ----. 2SO2 2H2O

SO2 2H2S ---. 3S 2H2O

a. How many grams of sulfur can be produced from 48.0 grams of O2?

b. How many grams of H2S are required?

.....please be specific

Answer 1

2H2S + 3O2 ===> 2SO2 + 2H2O

SO2 + 2H2S ===> 3S + 2H2O

Atomic weights: H=1  S=32  H2S=34  O=16  O2=32  

a. 48gO2 x 1molO2/32gO2 x 2molSO2/3O2 x 3molS/1molSO2 x 32gS/1molS = 96g S

b. 48gO2 x 1molO2/32gO2 x 2molH2S/1molO2 x 34gH2S/1molH2S = 102g H2S