A 3.71 g
sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was combusted in excess oxygen. This produced 5.19 g
CO2
and 0.636 g
H2O
. A second sample of this compound with a mass of 4.77 g
produced 2.43 g
SO3
. A third sample of this compound with a mass of 7.63 g
produced 3.06 g
HNO3
. Determine the empirical formula of the compound. Enter the correct subscripts on the given chemical formula.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.