Bromination of (z)? 3? hexene yields racemic 3,4? dibromohexane. provide a detailed mechanism for formation of the (3s,4s)? enantiomer, specifically showing br2 addition occurring from the top face of the alkene.

Can someone me with questions 15 to 17 plz.

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains