1. In the manufacturing of a lightbulb, the bulb is evacuated of air and then filled with argon gas.

1. In the manufacturing of a lightbulb, the bulb is evacuated of air and then filled with argon gas. What is the purpose of this? 2. Stainless steel is a corrosion-resistant metal because it contains large amounts of chromium. How does chromium protect the metal from corrosion? Hint: Chromium reacts with oxygen.