Exercise 81 in Ch. 16#81) A patient is given 0.050 mg of technetium-99m (where m means metastable—an unstable but long-lived state) a radioactive isotope with a half-life of about 6.0hours. How along until the radioactive isotope decays to 6.3 x 10-3 mg?The answer is: 18hrs (show work)Exercise 204 in Ch. 17#204) Identify each organic compound as either an alkane alkene alkyne aromatic alcohol ether aldehyde ketone carboxylic acid ester or amine.(a)(b)(c)(d) (e)(f)