Wich statements are true of the electron cloud model

What is the overall order of reaction for rate = k[no]2[o2]

What three things determine the shape and size of a puddle when water is poured out onto a surface

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?