Question: The grey is the answer. Please thoroughly explain why. Thanks! 7) Consider a First-order reaction A B shown below: Review of Concepts 13.3.1 t=0st=20s a)

The grey is the answer. Please thoroughly explain why. Thanks!

7) Consider a First-order reaction A B shown below: Review of Concepts 13.3.1 t=0st=20s a) What is the rate constant of the reaction. Show and explain. b) How many A and B molecules are present att=30s and t=40s. Explain your answer. Answer: t1/2=10sk=0.069s1 Att=30s:2A and 14B molecules. At t=40s:1A and 15B molecules

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