Relative Abundance Flashcards
1
Q
What does the atomic mass for each element represent?
A
The weighted average of masses for each individual isotope of an element.
2
Q
What is the atomic mass of carbon?
A
12.011 amu.
3
Q
Which isotopes primarily compose carbon?
A
- Carbon-12
- Carbon-14
4
Q
What is the relative abundance of carbon-12?
A
99.45%
5
Q
What is the relative abundance of carbon-14?
A
0.55%
6
Q
Why is the mass of carbon-12 weighted more in the calculation of carbon’s atomic mass?
A
Because carbon-12 is more abundant.
7
Q
What is the formula to calculate atomic mass?
A
atomic mass = mass (1 × %1) + mass (2 × %2) + …
