Aqueous sodium hydroxide solutions absorb carbon dioxide both because carbon dioxide has an apprecia — Stoichiometry Chemistry Question

Aqueous sodium hydroxide solutions absorb carbon dioxide both because carbon dioxide has an appreciable solubility in water and because the hydroxide ions react very favorably with excess CO₂ to form bicarbonate ions. A rigid vessel with 10.00 L of headspace contains 1.00 L of 0.100 M NaOH and is maintained at 25 °C. Carbon dioxide is introduced into the headspace at a pressure of 1.33 atm, which decreases to 1.00 atm after absorption into the aqueous NaOH is complete. If the experiment is repeated with an initial CO₂ pressure of 1.50 atm, 1.00 L of what concentration of NaOH would be required to reduce the pressure of CO₂ to 1.00 atm?