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Seudónimo
29-11-2016
Chemistry
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1, 2 and 3 ........
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Аноним
Аноним
29-11-2016
2.) Average atomic mass =Σ (abundance x molar mass) /100 = (12.64 x 302.04 + 18.23 x 304.12 + 69.13 x 305.03) /100 =304.486 u(Dalton) . This is avg atomic mass.
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