In three moles of ethane (C2H6), calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atom (iii) Number of molecules of ethane
In three moles of ethane (C2H6), calculate the following: (i) Number of moles of carbon atoms. (ii) Number of moles of hydrogen atom (iii) Number of molecules of ethane

(a) 1 mole {{C}_{2}}{{H}_{6}} contains two moles of C- atoms.

No. of moles of C- atoms in 3 moles of {{C}_{2}}{{H}_{6}}

= 2 * 3

= 6

(b) 1 mole {{C}_{2}}{{H}_{6}} contains six moles of H- atoms.

No. of moles of C- atoms in 3 moles of {{C}_{2}}{{H}_{6}}

= 3 * 6

= 18

(c) 1 mole {{C}_{2}}{{H}_{6}} contains 1 mole of ethane- atoms.

No. of molecules in 3 moles of {{C}_{2}}{{H}_{6}}

=3 * 6.023 * 10^{23}

=18.069 * 10^{23}