<b>(a)</b>Give the molecular formula of one homologue of each of the following:<br><b>(i) </b>C<sub>3</sub>H<sub>6</sub><br><b>(ii)</b> C<sub>2</sub>H<sub>6</sub><br><b>(iii) </b>C<sub>2</sub>H<sub>2</sub> <b>(b)</b> What is the difference in the molecular mass of any two adjacent homologues?<br> <b>(c)</b> By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?