Chemistry, 17.10.2019 06:30 mariahcid904

Anew element has two isotopes, one with a mass of 40.0 amu and the other with a mass of 42.0 amu. the atomic weight is 40.50g/mol

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Anew element has two isotopes, one with a mass of 40.0 amu and the other with a mass of 42.0 amu. th...

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