Propane $(C_3{H}_8)$ is fed into a continuous combustion reactor and burned with $30\%$ excess amount of air. In the combustion products no carbon monoxide is present.

a$)$ Draw and label a complete flowchart for the above combustion. Verify the system has zero degrees of freedom $($DOF$)$ if the percentage of conversion is specified.

$(5$ marks$)$

b$)$ If the conversion of the propane is $88\%,$ determine the molar composition of the product gas.

$(11$ marks$)$

c$)$ Explain the reasons why production of carbon monoxide can exist in certain combustion process and suggest a strategy to avoid it$.$

$(4$ marks$)$