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mugzieee
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Br consists of Br-79 and Br-81. The atomic mass of Br is 79.9. Find the % of Br-81 in bromine.
The percent abundance of Br-81 in bromine is approximately 49.31%. This means that out of all the bromine atoms in a sample, 49.31% will be Br-81 and the remaining 50.69% will be Br-79.
The percent abundance of Br-81 is determined through experiments such as mass spectrometry or nuclear magnetic resonance (NMR) spectroscopy. These techniques can separate and identify different isotopes of an element based on their mass-to-charge ratio or nuclear spin.
Knowing the percent abundance of Br-81 in bromine is important for understanding the chemical and physical properties of the element. Isotopes can have different reactivity and stability, which can impact their role in chemical reactions and biological processes.
Yes, the percent abundance of Br-81 can vary slightly in different sources of bromine. This is because different sources can have different isotopic compositions due to natural processes such as radioactive decay or fractionation.
No, the percent abundance of Br-81 is a constant value for a given sample of bromine. However, over time, the total amount of Br-81 and Br-79 can change due to radioactive decay. This can affect the overall percent abundance of Br-81 in a sample.