How many moles of s are in 33.3 g of (c3h5)2s

               0.292 moles of S

                          The chemical formula (C₃H₅)₂S may be of di(prop-1-en-1-yl)sulfane or it may be of diallylsulfane. First let us find the number of moles of each elemnet present in one mole of (C₃H₅)₂S. i.e.

                                         Element                         Moles

                                        Carbon                             6

                                        Hydrogen                         10

                                        Sulfur                                  1

As one mole of (C₃H₅)₂S weights 114 g so we can calculate the number of moles of S in 33.3 g of (C₃H₅)₂S as,

                         114 g of (C₃H₅)₂S contains  =  1 mole of S

Then,

                    33.3 g of (C₃H₅)₂S will contain  =  X moles of S

Solving for X,

                     X =  (33.3 g × 1 mol) ÷ 114 g

                      X =  0.292 moles of S