Question

important formulas of atoms and molecules class 9​

Answer 1

Answer:

SOME USEFUL FORMULAE

Number of moles of atoms =

Number of moles =

Number of moles of molecules =

Number of moles of molecules =

(i) 1 mole of molecules = Gram molecular mass.

(ii) 1 mole of molecules = 6.023 × 1023 molecules.

(iii) Gram molecular mass = 6.023 × 1023 molecules.

Answer 2

Answer:

Number of moles of atoms =

Number of moles =

Number of moles of molecules =

Number of moles of molecules =

(i) 1 mole of molecules = Gram molecular mass.

(ii) 1 mole of molecules = 6.023 × 1023 molecules.

(iii) Gram molecular mass = 6.023 × 1023 molecules.