Here's how to calculate the number of atoms in 2.50 moles of silver:

1. Avogadro's Number

* Avogadro's number is a fundamental constant in chemistry: 6.022 x 10^23. It represents the number of atoms, molecules, or ions in one mole of a substance.

2. Calculation

* Step 1: Start with the number of moles: 2.50 moles of silver

* Step 2: Multiply by Avogadro's number: 2.50 moles * (6.022 x 10^23 atoms/mole) = 1.51 x 10^24 atoms

Answer: There are 1.51 x 10^24 atoms in 2.50 moles of silver.