Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu)has an abundance of 48.161%. What is the atomic mass, in amu, of the other isotope?
A)106.905 amu
B)106.908 amu
C)106.903 amu
D)106.911 amu

Question

Quizplus · Accepted Answer

The atomic mass of an element is the weighted average of the masses of its isotopes, taking into account their relative abundances. In this case, we have two isotopes of silver: Ag-109 and the other isotope. Let's call the atomic mass of the other isotope x.The atomic mass of silver is given as 107.868 amu. This can be expressed as:107.868 amu = (0.48161 * 108.905 amu) + (0.51839 * x)Solving for x, we get:x = 106.905 amuTherefore, the atomic mass of the other isotope is 106.905 amu.

Silver Has an Atomic Mass of 107