Question

What is the energy per mole of photons with a wavelength of 307.1 nm? (c=3.00×10⁸ m/s, h=6.63×10⁻³ 4 J·s, NA=6.02×1023mo⁻¹)

Answer 1

To calculate the energy per mole of photons with a wavelength of 307.1 nm, we can use the equation E = hc/λ, where E is the energy, h is Planck's constant, c is the speed of light, and λ is the wavelength.

First, let's convert the wavelength from nanometers to meters:
307.1 nm = 307.1 × 10⁻⁹ m

Now, we can calculate the energy per photon:
E = (6.63 × 10⁻³⁴ J·s) × (3.00 × 10⁸ m/s) / (307.1 × 10⁻⁹ m)

Finally, to find the energy per mole of photons, we multiply the energy per photon by Avogadro's number (NA = 6.02 × 10²³ mol⁻¹):
Energy per mole = E × NA

Please note that the final answer will depend on the specific values you input for the variables.