Why were chlorofluorocarbons first developed?

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption

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

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false