To calculate the percent composition of silver chloride (AgCl), we need to determine the mass of silver and chlorine present in the compound and express them as percentages of the total mass.

The molar mass of AgCl is approximately 143.32 g/mol, which is the sum of the atomic masses of silver (Ag) and chlorine (Cl).

The molar mass of Ag is 107.87 g/mol, and the molar mass of Cl is 35.45 g/mol.

In one mole of AgCl, there is one mole of Ag and one mole of Cl. So, the mass of Ag in 1 mole of AgCl is 107.87 g, and the mass of Cl is 35.45 g.

To calculate the percent composition, we divide the mass of each element by the total molar mass and multiply by 100.

Percent Ag = (Mass of Ag / Molar Mass of AgCl) * 100

Percent Ag = (107.87 g / 143.32 g/mol) * 100

Percent Ag ≈ 75.25%

Percent Cl = (Mass of Cl / Molar Mass of AgCl) * 100

Percent Cl = (35.45 g / 143.32 g/mol) * 100

Percent Cl ≈ 24.75%

Therefore, the percent composition of silver chloride is approximately 75.25% silver and 24.75% chlorine.