Which molecular formula is also an empirical formula?

A. PCl3

B. C2H4

C. H2O2

D. C6H12O6

The molecular formula  is also an empirical formula.

Explanation:

Empirical formula of a compound represents the simplest positive integer ratio of constituting atoms.

Molecular formula may or may not be equal to empirical formula.

In general, if is the empirical formula then molecular formula is where n = 1, 2, 3......

                   Empirical formula                            Molecular formula

                                                                         or      

                           OH                                                 or

                                                                      or

Hence the molecular formula  is also an empirical formula.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2