Question: A hypothetical element has two isotopes: 81% have a mass of 126.1 amu, while the rest are 156.8 amu. What is the atomic mass

A hypothetical element has two isotopes: 81% have a mass of 126.1

A hypothetical element has two isotopes: 81% have a mass of 126.1 amu, while the rest are 156.8 amu. What is the atomic mass of this element? Answer: amu

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