Relative atomic mass 0.0 / 5 ? BiologyIsotopesGCSEEdexcel Created by: Rabiah.shoaibCreated on: 02-04-17 16:56 Work out the relative atomic mass of an element from the relative masses and abundances of its isotopes. (% of isotope 1 × mass of isotope 1) + (% of isotope 2 × mass of isotope 2) ÷ 100 1 of 5 N/A N/A 2 of 5 N/A N/A 3 of 5 N/A N/A 4 of 5 N/A N/A 5 of 5
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