Ascientist mixes to clear substances together and notices the following about the final solution it is cloudy some bubbles are produced the temperature of the final solution is the same as the initial temperature of both substances is this a physical or chemical change

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