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. The reactant concentration in a zero-order reaction was 6.00102molL1 after 140s and 4.00102molL1 after 400s. What is the rate constant for this reaction? Express your answer with the appropriate units. What was the initial reactant concentration for the reaction described in Part A? Express your answer with the appropriate units. The reactant concentration in a first-order reaction was 7.90102molL1 after 10.0s and 7.00103mol1 after 85.0s. What is the rate constant for this reaction? Express your answer with the appropriate units. The reactant concentration in a second-order reaction was 0.240molL1 after 295s and 1.60102molL1 after 715 8 . 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 Newton-meter as Nm