Chapter 2.3, Problem 1PPA

Practice ProblemATTEMPT

The atomic masses of the two stable isotopes of copper, ${}_{\text{69}}^{\text{63}}\text{Cu }\left(\text{69}\text{.17 percent}\right)\text{ and}$ ${}_{\text{29}}^{\text{65}}\text{Cu }\left(\text{30}\text{.83 percent}\right)\text{, are 62}\text{.929599 and 64}\text{.927793 amu,}$ respectively. Calculate the average atomic mass of copper.