What is the mass of—

(b) 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?




We know that,

Mass of 1 mole of a substance = Molar mass of that substance


(b) 4 moles of aluminium atoms 

Molar Mass of Aluminium = 27g

Mass of 1 mole Aluminium atoms = Molar mass of aluminium = 27g

Mass of 4 moles Aluminium atoms = 4 x  Molar mass of aluminium

                                                       = 4 x 27g

                                                       = 108g



  1. Class 9
  2. Chapter 3 Class 9 - Atoms And Molecules (Term 2)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo