Suppose 0.56 g of graphite ( C) is placed in calorimeter filled with oxygen at standard conditions ( 25C and 1 atm pressure) as it follows

C_(g) + O_{2(g) ==>} CO_2(g)

If the temperature rises from 25C to 25.89 C whereas, the heat capacity of the calorimeter was determined previously to be 20.7 KJ/C, then the heat (KJ) of the reaction at 25 C and 1 atm pressure is

Select one:

a. -9.3X10²

b. 9.3X10²

c. -3.9X10²

d. 3.9X10²

e. None of other answers is correct