In a 5.0 g sample of copper, which isotope would you expect to find the most? Use the data below.

1) List the known and unknown quantities.
Sample: Copper.
Isotopes
Copper-63.
Abundance: 69.15%
Copper-65.
Abundance: 30.85%
2) According to the percentages you should expect to find Copper-63 the most in the sample.