In a constant
volume bomb calorimeter, the combustion of 0.6654 gof an organic
compound with a molecular mass of 46.07 amu causesthe temperature
in the calorimeter to rise from 25.000oc to 30.589
oc. the total heat capacity ofthe calorimeter and all
its contents is 3576 joc-1. what is
the energy of combustion ofthe organic compound,
du/ kj
mol-1?

1383.34 kJ/mol is  the energy released on combustion of the organic compound.

Explanation:

Mass of an organic compound = 0.6654 g

Molar mass of organic compound = 46.07 g/mol

Moles of an organic compound =

Let heat evolved during burning of 0.6654 grams of an organic compound be -Q.

Heat absorbed by calorimeter = Q' = -Q

The total heat capacity of the calorimeter all  its contents = C

C = 3576 J/°C

Change in temperature of the calorimeter =  

ΔT = 30.589°C - 25.000°C = 5.589°C

Q' =  19.975 kJ

Q = -19.975 kJ (negative sign; energy released)

0.01444 moles of an organic compound gives 19.975 kilo Joule.

The 1 mole of an organic compound will give :

i believe it is c.) 1575 j.

bcde is the incorrect answer it is a