what is the molar mass of al2(so4)3?\no 150.03 g/mol\no 278.03 g/mol\no 342.17 g/mol\no 450.09 g/mol

Answer:

342.17 g/mol

Explanation:

Step1: Identify atomic masses

Al: 26.98 g/mol, S: 32.07 g/mol, O: 16.00 g/mol

Step2: Calculate molar - mass of Al₂(SO₄)₃

For Al: 2×26.98 = 53.96 g/mol For S: 3×32.07 = 96.21 g/mol For O: 12×16.00 = 192.00 g/mol

Step3: Sum up the masses

53.96+96.21 + 192.00=342.17 g/mol