Biochemistry Practice Problems VIII with Answers

Biochemistry Practice Problems VIII with Answers
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Theophylline is a pharmaceutical drug that is sometime used to help with lung function. You observe a case where the initial lab results indicate that the concentration of theophylline in patient’s body decrease from 2.0×10-3 M to 1.0×10-3 M in 24 hours. In another 12 hours, the drugs concentration was found to be 5.0×10-4 M. What is the value of the rate constant for the metabolism of this drug in the body?