Calculating the unknown mass of an isotope of Bromine from its average mass

Are you stumped by the concept of isotopes and wondering how to calculate the unknown mass of a Bromine isotope using its average atomic mass? This in-depth tutorial focuses on isotope calculations tailored specifically for high school IB, AP, IGCSE, SHC3U chemistry. We dive into nuclear chemistry, how atomic masses are derived, and the crucial steps to accurately calculate a single isotope’s mass when given average atomic mass data. We specifically answer the following question: "Bromine has two naturally occurring isotopes:Br-79 has a mass of 78.918 amu and is 50.69% abundant. Determine the mass of the other isotope, Bromine-81".

Using practical examples, we simplify complex calculations by covering fundamental formulas, sample problems, and error-reducing strategies. Gain a clearer picture of mass contributions, percent abundance, and how these principles tie into advanced chemistry topics such as stoichiometry and analytical techniques.

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