A race car burns nitromethane with air at an equivalence ratio of 1.25. Except for unburned fuel, all nitrogen ends up as and all carbon ends up as CO 2 (no CO). Write the balanced chemical reaction...

A race car burns nitromethane with air at an equivalence ratio of 1.25. Except for unburned fuel, all nitrogen ends up as and all carbon ends up as CO₂
(no CO). Write the balanced chemical reaction equation. Calculate:

(a) Percent stoichiometric air. [%]

(b) Air–fuel ratio.