See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
13 cards from this deck
1/12th mass of carbon-12 atom
Abundance of each isotope
Weighted average of all isotopes
Ar is average; mass number is one isotope
∑(mass×abund)total abund\frac{\sum(\text{mass} \times \text{abund})}{\text{total abund}}total abund∑(mass×abund)
Chlorine-35 and Chlorine-37
75%
25%
35.5
On the periodic table
Different isotopes contribute to weighted average
Moles=MassAr or Mr\text{Moles} = \frac{\text{Mass}}{\text{Ar or Mr}}Moles=Ar or MrMass
Relative formula mass
Select your subjects, and get access to A+ resources today.