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Convert the initial rate from units of abs/s to [o-NPG]/s. Use a cell path length, l=1cm and molar extinction coefficient of e=3550 M^-1 cm^-1. Remember that A=ecl where c is concentration.
If needed [o-NPG]=3.84*10^-4 (M)
Average initial rate= .0250 (Abs/s)
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