How many grams of dry NH4Cl need to be added to 2.30 L of a 0.300 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? (The Kb for ammonia is 1.8×10−5)

What layer of the atmosphere is directly above the troposphere?

Tell me the iupac names of the following alcohols:

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