what are the top three sources of u. s. electricity generation? estimate the overall efficiency of u. s. electricity generation. how does this compare to the efficiency for transportation?​

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

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.