Determine the molecular and empirical formulas of the following:
(a) The organic solvent benzene, which has six carbon atoms and six hydrogen atoms;
(b) The compound silicon tetrachloride, which has a silicon atom and four chlorine atoms and is used in the manufacture of computer chips;
(c) The reactive substance diborane, which has two boron atoms and six hydrogen atoms;
(d) The sugar called glucose, which has six carbon atoms, twelve hydrogen atoms, and six oxygen atoms.