¿Por qué crees que la química surge como ciencia en el siglo XVII a partir de los estudios de alquimia populares?

2b2t

explanation:

2b2t

fe 55.85 g/mol and h2o 18.02 g/mol.

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.