9. Quantum Mechanics

Which of the following statements is/are true concerning electrons?

At what speed must a 145-g baseball travel to have a wavelength of 1.15 × 10⁻³⁴ m?

Consider the two waves shown here (figure 1), which we will consider to represent two electromagnetic radiations.

A C–C bond has an average bond strength of 350 kJ/mol. What is the longest wavelength (lowest energy) light, in nm, that can break the average C–C bond? (1 m = 10⁹ nm)