Question

Silver has an atomic mass of 107.868 amu. The Ag-109 isotope (108.905 amu) is 48.16%. What is the amu of the other isotope?

Answer 1

The atomic mass of the other isotope = 106.905 amu

Step-by-step explanation:

Step 1: Data given

Atomic mass of silver = 107.868 amu

Ag109 isotope has an atomic mass of 108.905 amu = 48.16 %

Step 2: Calculate the abundance of the other isotope

100.0 % - 48.6 % = 51.84 %

107.868 = 0.4816*108.905 + 0.5184*X

55.419352 = 0.5184X

X = 106.905

The atomic mass of the other isotope = 106.905 amu