(a) Testosterone has a molar mass of 288.4 g/mol and is composed of 79.17
% C and 9.72 % H; the remaining % is O. What are the empirical and
molecular formulae of testosterone?

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

level 4 to level 2 : ))

c) should be the answer.