Question 1
Which of the following refer to the basic categories associated with the energy of a single molecule in a gaseous phase?
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nuclear, electronic, interval
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electronic, translation, rotation, vibration
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ionic, covalent, hydrogen, Van der Waals
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translation, rotation, vibration
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dipole-dipole, covalent, ionic, translation
Question 2
A pure sample of 226Ra contains 2.0 × 1014 atoms of the isotope. If the half-life of 226Ra = 1.6 × 103 years, what is the decay rate of this sample? (1 Ci = 3.7 × 1010 decays/s)