• # question_answer 65) The heat of formation of $C{{O}_{2}}$is -95 kcal. The amount of carbon which on burning will evolve 1000 kcal is A)  15.63 gB)  12.95 gC)  126.3 gD)  160.5 g

$C+{{O}_{2}}\to C{{O}_{2}}+95\,\text{kcal}$ 95 kcal heat is evolved from 1 mole of carbon. $\frac{12}{95}\times 1000=126.3\,g$ [1 mole of C = 12 g] Hence, the correct option is (c).