1B.5

[Megan Vu 1J]

In this question, it ask. "The gamma-ray photons emitted by the nuclear decay of a techne- tium-99 atom used in radiopharmaceuticals have an energy of 140.511 keV. Calculate the wavelength of these gamma-rays."

For 140.511 keV, how would this be converted back to Joules? Would we be expected to know this by the test?

[A Raab 1K]

I just looked up what keV was, so hopefully we don't have to know that for tests (maybe it'll be provided?)
1 keV = 1.60217662e-16 joules

[Rachel Yu 1G]

I don't think we would have to memorize the conversion. If we needed it for a test it would either be given or on the formula sheet.

[Tiffany Chao 2H]

The equation sheet should provide the conversion from keV to J is 1 keV = 1.6022 x 10^-16 J.