How many moles of tin metal will be produced when 0.74 moles of tin IV oxide is heated in the reaction #SnO_2 + 2H_2 -> Sn + 2H_2O#?
So, why clearly?
Well, to begin, you already have the stoichiometric equation:
This is a so-called
There is 1:1 equivalence of stannic oxide to tin metal. And thus 1:1 molar equivalence. Since stannic oxide has a molar mass of