The general mass balance equation is: in - out + generation - consumption = accumulation if the balanced quantity is a non-reactive species (neither a product or reactant), which terms should be set to zero? in out generation consumption accumulation

Generation and consumption should be set to zero.

Explanation:

In the case where the species are non-reactive, the Generation and Consumption should be set to zero.

The Generation term becomes different from zero when there is a reaction that changes the mass balance and this change didn't come from the inflow of mass.

The Consumption term also refers to a reaction where reactants are being consumed in a chemical reaction, differentiating it from the exit flow.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

answer carbon and three oxygen atoms;