1. Determine the molar mass of AsCl₃:
* Arsenic (As) has a molar mass of 74.92 g/mol.
* Chlorine (Cl) has a molar mass of 35.45 g/mol.
* Since there are three chlorine atoms in AsCl₃, the total mass of chlorine is 3 * 35.45 g/mol = 106.35 g/mol.
* The molar mass of AsCl₃ is 74.92 g/mol + 106.35 g/mol = 181.27 g/mol.
2. Use the following formula to calculate the mass:
Mass = moles * molar mass
Mass = 4.75 moles * 181.27 g/mol
Mass ≈ 860.77 g
Therefore, the mass of 4.75 moles of arsenic trichloride is approximately 860.77 grams.
