supergirl13 supergirl13

24-09-2016
Chemistry

contestada

what is the mass number of Ce

Respuesta :

24-09-2016

140.116 u ± 0.001 u is the answer

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josiah168 josiah168

24-09-2016

The answer is 140.116 u +/- (plus or minus doesnt matter) 0.001

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