Naturally occuring silver consists of two isotopes: 107Ag (51.84%) with an isotopic mass of 106.9051 amu and 109Ag (48.16%) with an isotopic mass of 108.9048 amu. What is the atomic mass of silver?

The atomic mass of silver is 107.8682 amu

Explanation:

Step 1: Data given

Isotopes of silver:

107Ag = 51.84 % = 106.9051 amu

109Ag = 48.16 % = 108.9048 amu

Step 2: Calculate the atomic mass of silver

Average atomic mass = isotopic mass 1 * abundance 1 + isotopic mass 2 * abundance 2

Average atomic mass = 106.9051 *0.5184 + 108.9048*0.4816

Average atomic mass = 107.8682 amu

The atomic mass of silver is 107.8682 amu

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