What is the theoretical yield of SO3 produced by 4.91 g of S?

12.2 g

Explanation:

Step 1: Write the balanced equation for the synthesis of SO₃ from S

S + 1.5 O₂ ⇒ SO₃

Step 2: Calculate the moles corresponding to 4.91 g of S

The molar mass of S is 32.07 g/mol.

4.91 g × 1 mol/32.07 g = 0.153 mol

Step 3: Calculate the theoretical yield, in moles, of SO₃ from 0.153 moles of S

The molar ratio of S to SO₃ is 1:1. The moles of SO₃ produced are 1/1 × 0.153 mol = 0.153 mol.

Step 4: Calculate the mass corresponding to 0.153 moles of SO₃

The molar mass of SO₃ is 80.06 g/mol.

0.153 mol × 80.06 g/mol = 12.2 g