Chemistry, 23.10.2020 21:10, mary2971

Calculate the average atomic mass of unknown element X. You determine that isotope 127X makes up 80%, isotope 126X makes up 17%, and isotope 128X makes up 3%.
C.
a. 127.10 amu
b. 126.86 amu
127.54 amu
d. 126.20 amu

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Calculate the average atomic mass of unknown element X. You determine that isotope 127X makes up 80%...