Chemistry, 20.11.2020 01:20 Jxsolvez

A mystery element "X” has two stable isotopes X-50 which occurs 40% of the time and X-60 which occurs 60% of the time. What is the average mass of element "X"?

A-50 amu
B-54 amu
C-56 amu
D-60 amu

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A mystery element "X” has two stable isotopes X-50 which occurs 40% of the time and X-60 which occu...