NSEJS Mole Concept PYQ P-25

Описание: W g of pure coal was combusted in pure dry oxygen. The carbon dioxide gas obtained was
absorbed in 0.1 M KOH solution. The complete absorption of CO2 required 5cm3
of 0.1 M KOH. The
amount of coal combusted is : [IJSO-Stage-I/2018-19]
(A) 3mg (B) 6mg (C) 11mg (D) 12mg