Engineering Thermodynamics
The mass of excess air supplied is equal to

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

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Engineering Thermodynamics
Zeroth law of thermodynamics

States that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
Deals with heat engines
Deals with reversibility and irreversibility of process
Deals with conversion of mass and energy

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