Question

molality and molarity formula.plz

Answer 1

Molarity
Molarity=stregth of grams per litre / Molecular mass of the solute(or)
=(X/mol.mass)1000*v(or)
=No. of moles of solute /volume of solution in litres
Molality
=(X/mol.mass)1000g*bg(or)
=No. of moles of solute/mass of solvent in kg

Answer 2

Hey !!

MOLARITY

                         Moles of solute / Volume of solution in litre

            = nb / V (in L)

            = Wb / Mb × V (in L)

MOLALITY

                Moles of solute / Mass of solvent in kg

          = nb / Wa (in kg) (OR) m = Wb × 1000 / Mb × Wa (in g)

Hope it helps you !