Answered: how long will it take to achieve the…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Disinfectants such as NaClO solution (sodium hypochlorite, the effective ingredient in many liquid bleach) can effectively kill virus including the type causing Covid-19. Such killing of pathogens typically follows first-order degradation kinetics, and the degradation rate constant varies roughly proportional to the disinfectant concentration.
In a study, we found that a diluted NaClO solution (1.0 mg/L) can kill 99% of the virus in 10 min. If we double the NaClO concentration to 2.0 mg/L, how long will it take to achieve the same 99% killing rate for the virus? (assuming other conditions unchanged)
(_________)

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