The average atomic mass of silver is 107.868 amu.Silver has two naturally occurring isotopes, ¹⁰⁷Ag (106.905 amu,51.839%)and ¹⁰⁹Ag.What is the isotopic mass of ¹⁰⁹Ag?

Question

Quizplus · Accepted Answer

Let x be the isotopic mass of ¹⁰⁹Ag. Then, we can set up the following equation using the given information: (0.51839)(106.905 amu) + (1 - 0.51839)(x) = 107.868 amu Solving for x, we get: x = (107.868 amu - 55.350 amu)/0.48161 x ≈ 108.91 amu Therefore, the isotopic mass of ¹⁰⁹Ag is approximately 108.91 amu, which corresponds to answer choice D.

The Average Atomic Mass of Silver Is 107