Lactase, an enzyme found in the small intestine, cleaves the milk sugar lactose to yield glucose and galactose. Assuming that the km for lactose is 0.9mM, vmax is 3.5 micromole/min/mg lactase, 5.7 micromoles lactose is presesnt, and the rxn mixture volume is 80 ml, calculate how much glucose would be formed in one minute by one mg of lactase.