What is heat of combustion ? How is it determined using bomb calorimeter ?

What is combustion ?

What is rapid combustion?

What is spontaneous combustion?

What is the atmospheric pressure and how is it determined using Barometer?

What do you mean by combustion?

The heat of combustion of benzene at 27^@C found by bomb calorimeter i.e., for the reaction C_6H_6_((l)) +7 1/2O_(2(g)) + 6CO_(2(g)) +3H_2O_((l)) is -780 K.Cal mol^(-1) . The heat evolved on burning 39g of benzene in an open vessel will be

a) What is combustion reaction ?

Work done during the combustion of one mole of CH_(4) in bomb calorimeter is