Question 1 (5 points) Calculate the frequency of a photon that exhibits a wavelength of 451 nm.
Equation: E = hu
h = 6.63 x 10-34]'s

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.