Question

3. What is the molar mass of Li2SO4? (2 points)

O 54.9 g/mol
103.0 g/mol
O109.9 g/mol
O 206.1 g/mol

Answer 1

C.) 109.9 g/mol

Step-by-step 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