What is the molar mass of Al2 (SO4) 3?

150.03 g/mol

278.03 g/mol

342.17 g/mol

450.09 g/mol

1) we find out the atomic mass of these elements (Al, S, O) Atomic mass (Al) = 27 amuAtomic mass (S) = 32 amuAtomic mass (O) = 16 amu2) Now, we calculate the molar mass of Al₂ (SO₄) ₃molar mass=2 (27) + 3[32+4 (16) ]=54+3 (32+64) = 54+3 (96) = 54+288=342 g/mol. answer: 342.17 g/mol.

the answer is C. 342.17 on edgen