Which of the following statements is NOT true? The corn that we grow today has not changed since prehistoric times. Early humans planted seeds from corn plants with large kernels. It took many generations for corn plants to change. Humans have selectively bred many different types of crops.

Word equation for k(s) +h2o(l) yield koh (aq) + h2

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

Salt in oceans comes from and of rocks