In three moles of ethane ($C_{2}H_{6}$) calculate the following :
(a) number of moles of carbon atoms
(b) number of moles of Hydrogen atoms
© number of molecules of ethane.
(a) 1 mole of ethane contains in 2 moles of carbon atoms.
3 mole of $C_{2}H_{6}$ contains in 6 moles of carbon atoms.
(b) 1 mole of $C_{2}H_{6}$ contains in 6 moles of hydrogen atoms.
3 moles of $C_{2}H_{6}$ will contain 3 x 6 = 18 moles of H atoms.
© 1 mole of $C_{2}H_{6}$ contains 6.023 x ${{10}^{23}}$ molecules of ethane.
3 moles of $C_{2}H_{6}$ will contain 3 x 6.023 x ${{10}^{23}}$ =1.8069 x 1024 molecules of ethane.