NEED HELP ASAP!!

Give the relationship between the following pairs of structures: CH2=CHCH2Cl and CHCl=CHCH3 stereoisomers same compound not isomers constitutional isomers Predict the hybridization and the bond angle around the nitrogen atom in [CH2NH2]+ (Hint: consider its Lewis structure and resonance) sp3, less than 109.5 sp, 180 5p3,109.5 5p2,120 Between CH4 and NH3, which one will have a higher pKa value? CH4 both have identical pKa values NH3