The mass of cadmium sulfide produced on reacting [tex] 112.4 g [/tex] of cadmium with [tex] 32.1 g [/tex] of sulfur = [tex] 112.4 g + 32.1 g = 144.5 g [/tex]
[tex] 1 g [/tex] of cadmium forms [tex] \frac{144.5}{112.4} [/tex] cadmium sulfide.
So, [tex] 22.0 g [/tex] of cadmium will give [tex] 22.0 \times \frac{144.5}{112.4} = 28.3 g [/tex] of cadmium sulfide.