(a) CH3CH2ONa + CH3CH,Cl Br S2 (b) + NaCN SN2 -s¯*Na + CH3CH2B. (c) Sh2 (d) CI + Na*:C= SN2 N + Mel (e)

You have 1 million atoms each of MN As S Cd and W. Which million of attoms is the heaviest? lightest?

n-BUCOH(Me)2 A 1) 2) n-BUCHO n-BUCOCI H2NOH/H * (Et), CuLi ******* ******** ***** A E Dry HCI HO(CH2);CHO DHP HCrO4 7A 1) PhLi/Et,0 2) H* (aq) G

CH;COCI pyridine IZ

*(iii) The reaction of ethene with aqueous potassium manganate(VII), KMNO., produces ethane-1,2-diol, CH,OHCH,OH. Data: molar mass of ethane-1,2-diol = 62 g mol In an experiment, KMNO, containing only "O reacts with ethene. Suggest how the mass spectrum of ethane-1,2-diol data could be used to decide whether the oxygen atoms in ethane-1,2-diol came from the manganate(VII) ion, water, or a combination of the two. (2)

A dose of 5 milligrams of penicillin is administered to a patient. The absorption constant for penicillin is 11% per hour and its minimum effective concentration is 2 milligrams. Use the formula C= Coe^kt. a). What amount of penicillin is present in this patient’s body at 30 minutes? Round your answer to one decimal place.  b).When should another dose of penicillin be administered to this patient in order to maintain the minimum effective concentration? Round your answer to one decimal place.

(c) 3.23 М КЗАSO4 lons: 04- KAS+ O AsO4 AsO43 O K* K3+ masscation i massanion II

chemPad О Help XX" -> Greek- (d) in + x-u +H 1. +X+U Li +H

CuBr2(aq) + K3PO4(aq) 个

Im still confused on where you got 3.58, could you please expand upon that?