For the balanced equation shown below, how many moles of O2 be produced by 0.8342 moles of C2H4Cl2?
2C2H4Cl2 + 3O2 → 4CO + 2H2O + 4HCl

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?