Answer:
Technician A
Explanation: Technician A is correct. Technician B is wrong, as an oil leak can trickle down onto other engine components, away from where the leak actually is.
Answer:

Explanation:
Hello,
In this case, we consider the reaction:

For which the law of mass action is expressed as:

Whereas the exponents are referred to the stoichiometric coefficients in the chemical reaction. Moreover, in table A-28 (Cengel's thermodynamics) the natural logarithm of the undergoing reaction at 2600 K is 2.801, thus:

In such a way, in terms of the change
the equilibrium goes:

Hence, solving for
:

Thus, the moles at equilibrium:

Finally the compositions:

Best regards.