For the raction A + 2B ==> C, the rate law is delta[C}/delta t = k{A][B]^2

Question

What are the units of the rate constant where time is measured in seconds?

I know the answer is 1/M^2-s

How?

Answer 1

M/s = k(A)(B)^2
A and B are measured in M; therefore,
M/s = k*M*M^2
Now divide both sides by M*M^2
(M/s*M*M^2) =
1/s*M^2