How many mole of $Zn\left(Fe{S}_2\right)$can be made from 2 mole zinc, 3 mole iron and 5 mole sulphur ?

No. of moles of Zn required = 1

No. of moles of Fe required = 1

No. of moles of S required = 2

Given,

moles of Zn = 2

moles of Fe = 3

moles of S = 5

Thus, Zn is the limiting reagent and according to stoichiometry, 2 moles of the compound will be formed.