Q.10:- In three moles of ethane (C2H6), calculate the following :
(i) Number of moles of carbon atoms.
(ii) Number of moles of hydrogen atoms.
(iii) Number of molecules of ethane.
(i) 1 mole of C2H6 contains 2 moles of Carbon atoms
∴ 3 moles of of C2H6 will contain 6 moles of Carbon atoms
(ii) 1 mole of C2H6 contains 6 moles of Hydrogen atoms
∴ 3 moles of of C2H6 will contain 18 moles of Hydrogen atoms
(iii) 1 mole of C2H6 contains Avogadro’s no. 6.02×1023 molecules
∴ 3 moles of of C2H6 will contain ethane molecule = 3×6.02 ×1023= 18.06 ×1023 molecules.