Chapter 9 Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals - Study Questions - Page 369c: 37

See the answer below.

a) The leftmost carbon is $sp^3$ hybridized because it makes 4 single bonds. The other is $sp^2$ hybridized because it makes a double bond. b) Nitrogen is $sp^2$ hybridized, so the angle is approximately 120°.