What is the utility of mole concept?
2. To calculate the mass of one molecule of the substance.
3. To calculate the number of atoms and the number of molecules in a given mass of the element.
The Number of atoms in a given mass of the element.
4. To calculate the number of molecules and the number of moles in a given mass of the substance.
No. of molecules in a given mass of a substance
5. To calculate the volume occupied at S.T.P. by a given mass of a gas.
Volume occupied at S.T.P. by given mass of a gas
6. To calculate the number of molecules present in a given volume of a gas at S.T.P.
No. of molecules contained in given volume of gas at S.T.P.
7. To calculate the number of atoms and molecules in the given number of moles of a substance.
No. of atoms in a given number of moles of element
= 6 · 023 × 1023 × No. of moles of element No. of molecules in a given number of moles of substance
= 6·023 × 1023 × No. of moles of substance
