In three moles of ethane (C_(2)H_(6)), calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane.

In three moles of ethane (C_(2)H_(6)), calculate the following: (i) Nu

1.	In three moles of ethane (C_(2)H_(6)), calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atoms. (iii) Number of molecules of ethane.
Answer» SOLUTION :(i) 1 MOLE of ETHANE contains 2 moles of carbon ATOMS. `therefore` Number of moles of carbon atoms in 3 moles of ethane `=3 XX 2=6` (ii) 1 mole of ethane contains 6 moles of hydrogen atoms. `therefore`Number of moles of hydrogen atoms in 3 moles of ethane `= 3 xx 6 = 18` (iii) 1 mole of ethane contains `6.022 xx 10^23` (Avogadro.s no.) molecules. `therefore` Number of molecules in 3 moles of ethane `= 3 xx 6.022 xx 10^(23)` `=18.066 xx 10^(23)`