Amount of 12.01g of carbon contains same no.of moles as 18 g of oxygen

Question

Amount of carbon 12.01g is has same amount of moles as oxygen of 18g

Answer 1

Divide the masses by the respective atomic weights to get the number of moles.  The atomic weight of C is 12.01, so you have

 

(12.01 g)/(12.01 g/mol) = 1 mole

 

The atomic weight of O is 16.00, so you have

 

(18 g)/(16.00 g/mol) ≅ 1.125 moles

 

The number of moles of C is not the same as the number of moles of O.