Final answer:
The atomic mass of copper can be calculated using the percent abundance and the mass of each isotope. In this case, copper has two isotopes: one with a mass of 62.93 amu and the other with a mass of 64.93 amu. The atomic mass of copper is 63.48 amu.
Step-by-step explanation:
The atomic mass of copper can be calculated using the percent abundance and the mass of each isotope. In this case, copper has two isotopes: one with a mass of 62.93 amu and the other with a mass of 64.93 amu. The percent abundance of the first isotope is 69.1%.
To calculate the atomic mass, we multiply the mass of each isotope by its percent abundance and then add the two values together:
Atomic mass of copper = (0.691 * 62.93 amu) + (0.309 * 64.93 amu)
Simplifying the equation gives us:
Atomic mass of copper = 43.45 amu + 20.03 amu = 63.48 amu
Therefore, the atomic mass of copper is 63.48 amu.