Answer the questions below for the reaction X > products, given the information that a plot of ln [X] vs. time is linear with a best-fit line (R2 = 0.998) having the equation y = 1.50x 0.500 and that the units of [X] and time are M and s, respectively. (a) Is the reaction X products zero order, first order, or second order? Explain. (b) What is the rate constant for the reaction? Include both the value and the units. (c) What is the half life for this reaction? (d) If [X]o = 1.00 M, at what time is [X] = 0.25 M? (e) If [X]o = 1.00 M, at what time is [X] = 0.15 M?