Ans:C 27.What is the correct Newman projection for the following molecule? H3CH2C (CH2)2CHz C、 CH3 (CH2)2CH H:CH2C- Br CH3 c) CH2CH3 CH3 H;CH2C CH b) (CH2)2CHs C、 CH3 -CH2CH E)none of the above Ans:A Page9 Page 9 26. The common name for 1-methylpropyl is: A) Isopropyl B) Isobutyl C) sec-Butyl D) tert-Butyl E) none of the above Ans: C 27. What is the correct Newman projection for the following molecule? H3C Cl H3CH2C Br A) CH3 Cl CH3 (CH2)2CH3 Br CH2CH3 B) CH3 Cl CH3 (CH2)2CH3 H3CH2C Br C) CH3 Cl CH3 CH2CH3 H3CH2C Br D) H Cl CH3 (CH2)2CH3 Br CH2CH3 E) none of the above Ans: A