How do you calculate the atomic mass of bromine?

Answer 1

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There only two abundant isotopes of bromine, #50.7%# #""^79Br#, and #49.3%# #""^81Br#. The weighted average of the masses of these isotopes gives #70.9*"amu"#, which is the atomic mass of bromine quoted on the Periodic Table.

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Answer 2

Axel Alvarado

For bromine, this results in an atomic mass of about 79.904 u. Multiply the isotopic mass of each bromine isotope by its natural abundance, add the products, and round to the appropriate number of decimal places.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.