When the equation, __Al2(CO3)3(s) + __CaBr2(s)  __CaCO3(s) + __AlBr3(aq) is balanced, the coefficients are

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2