A: That’s the property of a weighted average. It always lies between the two extremes and is pulled toward the more abundant isotope.
A: No. Real isotopes differ in neutron number, not chemical composition. This is an analogy. However, the lab successfully models isotopic behavior because both “Pennium isotopes” are chemically similar (both are pennies) but have different masses and abundances. isotopes of pennium lab answer key
By completing this lab and checking your answers against this key, you should now be able to: A: That’s the property of a weighted average
A: The average atomic mass is a weighted average. It depends on the relative abundance. Since there were more light pennies (post-1982) in the sample, the average is pulled closer to 2.50g than 3.11g. isotopes of pennium lab answer key