Q4 of 24 Page 165

‘Cl’ represents Chlorine atom, ‘Cl₂’ represents Chlorine molecule.
List out any two differences between atoms and molecules.

Note –

Atoms combine to form molecules.

Molecular mass of Nitrogen is 28. Its atomic mass is 14. Find the atomicity of Nitrogen.

Gram molecular mass of Oxygen is 32 g. Density of Oxygen is 1.429 g/litre. Find the gram molar volume of Oxygen.

Calculate the gram molecular mass of water from the values of gram atomic mass of Hydrogen and of Oxygen.

Gram atomic mass of Hydrogen = 1 g

Gram atomic mass of Oxygen = 16 g

One mole of any substance contains 6.023 x 10²³particles.

If 3.0115 x 10²³ particles are present in CO₂, find the number of moles.

Questions · 24

10. Atoms and Molecules

1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 1 2 3 4 5 6

‘Cl’ represents Chlorine atom, ‘Cl2’ represents Chlorine molecule.List out any two differences between atoms and molecules.