Answer:
C.) 109.9 g/mol
Explanation:
The molar mass is the sum of each element's atomic weight times their quantity. There is one atom of each element unless denoted by subscripts.
Atomic Mass (Li): 6.9410 g/mol
Atomic Mass (S): 32.065 g/mol
Atomic Mass (O): 15.998 g/mol
Molar Mass (Li₂SO₄): 2(6.9410 g/mol) + 32.065 g/mol + 4(15.998 g/mol)
Molar Mass (Li₂SO₄): 109.939 g/mol
