Chemistry, 09.07.2019 12:30 ymlantigua21
Boron naturally occurs in two isotopic forms. the more common isotope is 11b (atomic mass 11.01 amu), which is 80.00% abundant. the average atomic mass of boron is 10.81. what is the mass of the other isotope?
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The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?
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Boron naturally occurs in two isotopic forms. the more common isotope is 11b (atomic mass 11.01 amu)...
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