## 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. $$ egin{array}{lcc} & ext { Mass } & ext { Percent Abundance } \ hline ext { Br-79 } & 78.9183 mathrm{amu} & 50.70 % \ ext { Br-81 } & 80.9163 ext { amu } & 49.32 % end{array} $$

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