The number that represents a neutral pH is . Numerical Answers Expected!

Answer for Blank 1:

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

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

At element makes up all organic compounds?