Question

Please with steps....

2C3H6O (I) + 8O2 (g) -------> 6CO2 (g) +6h2O (g) + 853.6 kcal

How much heat will be given off if 0.620 mol of acetone is burned completely?

Heat=.....................kcal

Answer 1

853.6 kcal heat is given off from burning 2 moles of C3H6O;

Qx kcal heat will be given off from 0.620 mol of C3H6O.

So

$$Qx=853.6*0.620/2=264.616 kcal$$