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June 25th, 2017, 11:02 PM   #1
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absorbance and concentration question

Alkaline phosphatase is allowed to act on its substrate for 10 min. The incubation mixture was assayed and the absorbance was found to be 0.885. The corresponding standard of 1200nmol/mL is 1.35. What is the amount of product in the test sample?

I got the answer of 786.7nmol/mL using the absorbance is proportional to concentration formula which is:

0.885/1.35 = x/1200
x=786.7nmol/mL

is that the answer? i put that answer in to the question and it said it was incorrect. i also put 787 into the answer and it also said it was incorrect.
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