Methane and oxygen react in the presence of a catalyst to form formaldehyde. In a parallel reaction, methane is oxidized to carbon dioxide and water.

CH$4+$ O$2->$ HCHO $+$ H$2$O

CH$4+2$O$2->$ CO$2+2$H$2$O

The feed to the reactor contains equimolar amounts of methane and oxygen. Assume a basis of $100\mathrm{.}0$ mol feed$/$s$.$

a$.$ How many degrees of freedom remain for the overall process?

Enter your answer into the first answer field in accordance with the question statement.

b$.$ The fractional conversion of methane is $0\mathrm{.}920$ and the fractional yield of formaldehyde is $0\mathrm{.}865$ mol HCHO$/$mol CH$4$ fed. What is the composition of the output stream?