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Cu(Naturally occurring) consists of 2 isotopes 63Cu and 65Cu and has a relative atomic mass, (Ar) of 63.55 considering this statement define the term used as relative atomic mass , Ar and  also State and give explanation which is the more abundant isotopic form of copper.

It is observed that hepatic plasma clearance is 1/3rd of total plasma clearance in  In healthy volunteers with the rest being really cleared. determine the renal extraction ratio for CHF patients it CHF reduces renal function by 1/2 ?

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