Based on Avogadro's number, which of the following is NOT true? (For reference: the molecular mass of hydrogen is 1 g/mol, the molecular mass of oxygen is 16 g/mol.)

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?