The following reaction is second-order in A and first-order in B:

2 A + B A₂B

What is the reaction rate if k = 2.55 M^-2s^-1 and [A] = 1.00 M [B] = 0.30 M?

Hint: Write down the correct differential rate law based on the order with respect to A and B, then plug in the concentrations and k to calculate rate (R).