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10 questions from this quiz
112\frac{1}{12}121 mass of carbon-12 atom
Abundance of each isotope
A weighted average of all isotopes
ArArAr is weighted; mass number is one isotope
10.810.810.8
35.535.535.5
Different isotopes contribute to ArArAr
On the periodic table
Moles, empirical & molecular formulas
Moles=MassAr or Mr\text{Moles} = \frac{\text{Mass}}{Ar \text{ or } Mr}Moles=Ar or MrMass
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