IB skill practice

Calculate relative atomic mass from isotope abundance

Paper 1, Paper 2 5 marks Difficulty 4

Relative atomic mass from two isotopes

A chlorine-like sample in a school spectroscopy trial has isotope masses \(35\) and \(37\) with abundances \(83\%\) and \(17\%\). Calculate the relative atomic mass. Enter the answer and choose the interpretation that matches the chemistry.

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