Which of the bonds shown has the weakest absorption? CH3CH₂-C=C-CH₂CH3 CH3CH₂-C=C-H A) I B) II C) III 1 D) I and IV E) I and III || ||| IV

S H-H 436 kJ/mol C-H 413 kJ/mol C=C 614 kJ/mol H-Cl 431 kJ/mol C-C 348 kJ/mol C=C 839 kJ/mol H-F 567 kJ/mol C-N 293 kJ/mol C=O 799 kJ/mol N-H 391 kJ/mol 358 kJ/mol 0=0 495 kJ/mol N-O 201 kJ/mol 485 kJ/mol C=O 1072 kJ/mol O-H 463 kJ/mol C-Cl 328 kJ/mol C=N 615 kJ/mol 0-0 146 kJ/mol C-S 259 kJ/mol N=N 418 kJ/mol F-F 155 kJ/mol Cl-CI 242 kJ/mol N=N 941 kJ/mol C=N 891 kJ/mol Estimate the enthalpy change (A Hrxn) of the following reaction for 2 moles of F2 using the bond energies above. HH H\ >H C=C H + F-F →→ kJ Question Help: Message instructor Submit Question JUL 29 H-C-C-H F F 648 231 W •

Assign 1,2 and 3 configuration S or R

Provide the least stable conformation of the following compound. Cis/trans stereochemistry matters