Question

Calculate the number of moles in 9 g of ethane...with steps plz?

Answer 1

no of moles=given mass/ molecular mass
given mass=9g

chemical formula of ethane=C2H6
molecular mass=12*2+1*6
=24+6
=30

therefore no of moles=9/30=3/10=0.3 moles

hence 0.3 moles is the answer