Moles and chemical equations [closed]








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Sulfur reacts with oxygen according to the following equation:
2S + 3O2 -----> 2SO3
If 4 moles of sulphur reacts with 9.5 moles of oxygen, how many moles of oxygen would remain after the reaction?




This a very logical question based on limiting reagent concept.


As you can see $2$ moles of sulfur require $3$ moles of $O\_2$.
By unitary method $4$ moles of sulfur will require $6$ moles of $O\_2$.
Hence $3.5$ moles of $O\_2 $ will be left out.


By the way you shouldn't post such "homework" questions without showing any effort.


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