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1. Bromine has two common isotopes: Br-79 and Br-81. If these two isotopes are almost equally abundant (i.e., an abundance of 50% each), what is the weighted average mass of a sample of bromine atoms? (Calculate the answer based on this information and do not use the periodic table.)
2. The actual weighted atomic mass of bromine is 79.904 amu. Which isotope is slightly more abundant? Br- 79? or Br- 81?
1. Bromine has two common isotopes: Br-79 and Br-81. If these two isotopes are almost equally abundant (i.e., an abundance of 50% each), what is the weighted average mass of a sample of bromine atoms? (Calculate the answer based on this information and do not use the periodic table.)
2. The actual weighted atomic mass of bromine is 79.904 amu. Which isotope is slightly more abundant? Br- 79? or Br- 81?
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Beverley SmithLv2
13 Dec 2019
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