11. The molecular mass of a compound is expressed in grams, it is called  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density Mass.
12. An  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density is the smallest particle of an element.
13. ‘mole’ denotes a  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density
14. The study of the collection of particles by using mole as the counting unit, in order to express the mass and volume of such unit particles in a bulk of matter is known as  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density.
15. One mole of an element contains  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density atoms and it is equal to its  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density mass.
16. One mole of any gas occupies  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density litre or  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density ml at S.T.P. This volume is called as  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density
17. H2(g) + Cl2(g) → 2  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density(g)
18. The  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density of a gas or vapour is the ratio between the mass of one molecule of the gas or vapour to mass of one atom of Hydrogen.
19. Two or more forms of an element having the same atomic number, but different mass number are called  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density .
20. Molecular mass = 2 ×  22.4224006.023 × 1023atomgram atomicGram MolecularHClIsotopesmolar volume.mole conceptnumber of particles.Relative Molecular MassVapour density.