1. Write the Balanced Chemical Equation:

Zn (s) + H₂SO₄ (aq) → ZnSO₄ (aq) + H₂ (g)

2. Determine the Molar Mass of Zinc (Zn):

The molar mass of Zn is 65.38 g/mol.

3. Calculate Moles of Zinc:

* Moles of Zn = (mass of Zn) / (molar mass of Zn)

* Moles of Zn = 31.8 g / 65.38 g/mol

* Moles of Zn ≈ 0.487 mol

4. Apply the Mole Ratio:

* From the balanced equation, 1 mole of Zn produces 1 mole of H₂.

5. Calculate Moles of Hydrogen (H₂):

* Moles of H₂ = Moles of Zn

* Moles of H₂ ≈ 0.487 mol

6. Determine the Molar Mass of Hydrogen (H₂):

* The molar mass of H₂ is 2.016 g/mol.

7. Calculate the Mass of Hydrogen:

* Mass of H₂ = (moles of H₂) * (molar mass of H₂)

* Mass of H₂ ≈ 0.487 mol * 2.016 g/mol

* Mass of H₂ ≈ 0.982 g

Therefore, approximately 0.982 grams of hydrogen are produced from 31.8 grams of zinc.