At what temperature, will most probable speed of the molecules of the second member of homologous series C_(n),H_(2n-2) be the same as that of oxygen at 527^(@)C?

At what temperature, will most probable speed of the molecules of the

1.	At what temperature, will most probable speed of the molecules of the second member of homologous series C_(n),H_(2n-2) be the same as that of oxygen at 527^(@)C?
Answer» `1000^(@)C` `727^(@)C` `1727^(@)C` `1044.5^(@)C` ANSWER :B