calculate the mass no of moles and no of each constituents elements present in 6g of ethane gas(gmm=30g=1mole)

The molecular mass of ethane molecule (C₂H₆ ) is 30g.

30 g of ethane means = 1 mol

6 g means =   6/36

                =0.166 mol 0f ethane

30g of ethane contains = 24g of carbon

6g  of ethane contains = 144/30

                                 =48g of C

Similarly 30 g of ethane contains = 6g of H

              6 g of ethane contains = 36/30 =1.2 g of H