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12 questions from this quiz
112\frac{1}{12}121 the mass of a carbon-12 atom
The abundance of each isotope
A weighted average of all isotopes
ArArAr is a weighted average; mass number is for one isotope
75%
35.5
Different isotopes contribute to it
On the periodic table
(mass×abundance)+...totalabundance\frac{(mass \times abundance) + ...}{total abundance}totalabundance(mass×abundance)+...
Moles=MassAr or Mr\text{Moles} = \frac{\text{Mass}}{Ar \text{ or } Mr}Moles=Ar or MrMass
10.2
Moles, empirical formulas, and MrMrMr
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