Engineering Thermodynamics
The mass of excess air supplied is equal to

(23/100) × Mass of excess carbon
(100/23) × Mass of excess oxygen
(23/100) × Mass of excess oxygen
(100/23) × Mass of excess carbon

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Engineering Thermodynamics
The specific heat at constant volume is

The amount of heat required to raise the temperature of 1 kg of water through one degree
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
Any one of the above
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure

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