In your lab you are studying the kinetics of the degradation of a pain killer in the human liver. you are monitoring the concentration of the pain killer over a period of time. the initial concentration of the pain killer in your experiment was 1.79 m. after 12.39 hours the concentration was found to be 0.8950 m. in another 24.77 hours the concentration was found to be 0.4475 m (t = 27.868 hours overall). if another experiment were set up where the initial concentration of the pain killer was 0.479 m, how long would it take for the pain killer concentration to reach 0.0161 m?

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

answer: i dont know the answer but this might

explanation:

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answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.