Item 4 The integrated rate laws for zero, first, and secondorder reaction may be arranged such that they resemble the equation for a straight line,y=mx+b.

Part A The reactant concentration in a zeroorder reaction was 6.00×10^{−2} mol L−1 after 140 s and 3.50×10^{−2} mol L−1 after 400 s . What is the rate constant for this reaction? Express your answer with the appropriate units.
SubmitHintsMy AnswersGive UpReview Part Correct Part B What was the initial reactant concentration for the reaction described in Part A? Express your answer with the appropriate units.
SubmitHintsMy AnswersGive UpReview Part Part C The reactant concentration in a firstorder reaction was 8.50×10^{−2} mol L−1 after 35.0 s and 4.50×10^{−3}mol L−1 after 80.0 s . What is the rate constant for this reaction? Express your answer with the appropriate units.
SubmitHintsMy AnswersGive UpReview Part Incorrect; Try Again; 9 attempts remaining Part D The reactant concentration in a secondorder reaction was 0.500 mol L−1 after 215 s and 7.70×10^{−2} mol L−1 after 745 s . What is the rate constant for this reaction? Express your answer with the appropriate units. Include an asterisk to indicate a compound unit with mulitplication, for example write a Newtonmeter as N*m.
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