Final answer:
To find the average atomic mass of silver, calculate the weighted average of the masses of Ag-107 and Ag-109 using their respective percentages as weights. The average atomic mass of silver is 107.86144 amu, which matches the value given in the periodic table.
Step-by-step explanation:
To find the average atomic mass of silver, we need to calculate the weighted average of the masses of Ag-107 and Ag-109, using their respective percentages as weights. The mass of Ag-107 is 106.9051 amu, and the mass of Ag-109 is 108.9048 amu. Using the formula:
Average atomic mass = (%Ag-107 * mass of Ag-107) + (%Ag-109 * mass of Ag-109)
Substituting the values:
Average atomic mass = (0.52 * 106.9051 amu) + (0.48 * 108.9048 amu) = 107.86144 amu.
Comparing this with the value given in the periodic table, the correct answer is C) 107.86144 amu.
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