Resource Problems Flashcards

(2 cards)

1
Q

A gamma-ray photon energy is often expressed in electronvolts (eV).
What is the wavelength of a gamma-ray of keV energy?

A
  1. Use the formula wavelength(nm) = 119,626.6/deltaE(kj/mol) after converting eV to kJ/mol.
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2
Q

Unit of the Activity <-> 1/2 life calculation

A

Activity = k * N

1) You want to calculate the amount of the substance in ATOMS. So you get moles, then avagadro.
2) You want the k in SECONDS. So, you convert the half-life to seconds, THEN use that value to get K.

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