Penicillinase, also known as β‑lactamase, is a bacterial enzyme that hydrolyzes and inactivates the antibiotic penicillin. penicillinase follows simple michaelis–menten kinetics and reaches half its maximal rate of 6.8×10−10 µmol⋅min−1 when the penicillin concentration is 5.2×10−6 m. what would happen to the initial reaction velocity, , of penicillinase if the penicillin concentration were 10.4×10−6 m?