Ammonia is produced by the Haber process in which nitrogen and hydrogen combine according to the reaction equation below. Yet, the reaction only results in a 15.0 % yield. How many grams of nitrogen are needed to produce 27.5 grams of ammonia, given an excess of ammonia gas

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.