For the Reaction C(graphite)+ O₂(g) $\rarr$ CO₂(g) $\Delta$ H° = -393 KJ/mol
How Many Grams of C(graphite)must Be

For the reaction C(graphite) + O₂(g) $\rarr$ CO₂(g) $\Delta$ H° = -393 kJ/mol
How many grams of C(graphite) must be burned to release 275 kJ of heat?

A) 22.3 g
B) 0.70 g
C) 12.0 g
D) 17.1 g
E) 8.40 g