Can someone please do a True or false for these PLEASE

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block