all with description if able to!

11) The name of the molecule shown is: 11). A) trans-3-chioro-3-pentene B) cis-3-chloro-2-pentene C) trans-3-chloro-2-pentene D) cis-3-chloro-3-pentene E) monochloro-2-cis-pentene 12) The name of the molecule shown is 12) A) trans-3-chloro-2-methyl-2-butene B) 3 -chloro-2-methylene-butane C) 2-chloro-3-methylene-butane D) cis-3-chlaro-2-methyl-2-butene E) 3-chlero-2-methyl-1-butene 13) Which molecule can have cls-trans isomers? 13) A) (CH3)2CCHCH3 B) CH3CH=CCl2 C) (CH3)2C=C(CH3)2 D) CH3CH=CHCl E) CHH3CH=C(CH3)2 14) The bend angle about a carbon atom involved in a double bond is: A) 90. B) 105. C) 180. D) 109.5. E) 129. 15) The bond angle about a carbon atom invotved in a triple bond is: A) 109.5. B) 90 C) 180. D) 120, E) 105 15) 16) What is the idesl angle between the HCC bond in ethylene? 16) A) 120 B) 180 C) 90 D) 109.5 E) none of the above