## Chemistry: The Molecular Science (5th Edition)

(a) $3.00 \times 10^{-7}m$ (b) 300. nm
Frequency $\times$ Wavelength = Velocity Speed of light: $2.998 \times 10^{8} m/s$ $9.99 \times 10^{14} \times λ = 2.998 \times 10^{8}$ $λ = \frac{2.998 \times 10^{8}}{9.99 \times 10^-7} = 3.00 \times 10^{-7}$ (a) $3.00 \times 10^{-7}m$ 1 nanometer = $10^{-9}m$ $3.00 \times 10^{-7}m \times \frac{1 nm}{10^{-9}m} = 300. nm$ (b) 300. nm.