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Calculate the atomic mass of bromine, given the following information about bromine's stable isotopes. $$ egin{array}{lcc} & ext { Mass } & ext { P...

Question

Calculate the atomic mass of bromine, given the following information about bromine's stable isotopes. $$ egin{array}{lcc} & ext { Mass } & ext { Percent Abundance } \ hline ext { Br-79 } & 78.9183 mathrm{amu} & 50.70 % \ ext { Br-81 } & 80.9163 ext { amu } & 49.32 % end{array} $$

Calculate the atomic mass of bromine, given the following information about bromine's stable isotopes. $$ egin{array}{lcc} & ext { Mass } & ext { Percent Abundance } \ hline ext { Br-79 } & 78.9183 mathrm{amu} & 50.70 % \ ext { Br-81 } & 80.9163 ext { amu } & 49.32 % end{array} $$



Answers

Bromine has two naturally occurring isotopes (Br-79 and Br-81) and an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163 amu, and its natural abundance is 49.31%. Calculate the mass and natural
abundance of Br-79.


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