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Answer chemistry homework?
1.A certain element consists of two stable isotopes.
The first has a mass of 62.9 amu and a percent natural abundance of 69.1 %.
The second has a mass of 64.9 amu and a percent natural abundance of 30.9 %.
What is the atomic weight of the element?_____ amu
2. The element antimony has an atomic weight of 122 and consists of two stable isotopes antimony-121 and antimony-123.
The isotope antimony-121 has a mass of 121 amu and a percent natural abundance of 57.3 %.
The isotope antimony-123 has a percent natural abundance of 42.8 %.
What is the mass of antimony-123? _______ amu
4.What is the mass of a dinitrogen monoxide molecule ?
5.What is the mass of a dinitrogen monoxide molecule ?
- kswck2Lv 71 month ago
Do your own homework-how else do you Learn?
- Anonymous1 month ago
move to homework help. damn cheater