The heat capacity C is given by the formula
C = heat absorbed / increase in temp
 or heat absorbed in a bomb calorimeter= C X increase in temp
 =  1.56 kj/°CX  3.2°C.(please do calculations your self)
now this is the heat given out by combustion of o.1964g sample of quinone
Heat given by one g = 1.56 kJ/°CX  3.2°C. X 1g /o.1964g
Calculate number of moles of  quinine  in o.1964g sample
= mass / molar mass
heat liberated per mole = number of moles X 1.56 kj/°CX  3.2°C.