Which particles have about the same mass? O A. Neutrons and protons
B. Electrons, neutrons, and protons
O C. Electrons and protons
O D. Electrons and neutrons

What is the density of the black hole

Consider this initial-rate data at a certain temperature for the reaction described by

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