Chemistry, 17.12.2020 18:20 jetblackcap

Students are given the following data for determining the average atomic mass of Lithium: A sample of Lithium consists of 400 atoms:

30 atoms are the isotope Lithium-6 (6.015 amu)

370 atoms are the isotope Lithium-7 (7.016 amu).

Which student correctly calculated the correct average atomic mass of Lithium and why?

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