Answer;
4; 10; and 8
In 4C10H8, the coefficient is 4 , the subscript of carbon is 10, and the subscript of hydrogen is 8.
Explanation;
Naphthalene is a white, volatile, solid polycyclic hydrocarbon contains carbon and hydrogen) with a strong mothball odor. Naphthalene is obtained from either coal tar or petroleum distillation and is primarily used to manufacture phthalic anhydride, but is also used in moth repellents.
Naphthalene is found in many essential oils. Naphthalene is an organic compound with formula C10H8. It is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0. 08 ppm by mass.