Jeopardy! Round, Double Jeopardy! Round, or Tiebreaker Round clues (5 results returned)

#3461, aired 1999-09-27CLASSICAL GASES $200: The most common isotope of hydrogen has an atomic weight of this whole number 1
#3461, aired 1999-09-27CLASSICAL GASES $400: Discovered separately in the 1770s by British & Swedish chemists, it was found to be a gas by a Frenchman Oxygen
#3461, aired 1999-09-27CLASSICAL GASES $800: Lighter than air, it's also called marsh gas & is found in natural gas methane
#3461, aired 1999-09-27CLASSICAL GASES $1,000 (Daily Double): As a liquid, it's used as a cryogenic refrigerant; as a gas, it makes lights red neon
#3461, aired 1999-09-27CLASSICAL GASES $1000: This gas forms tiny bubbles in a diver's bloodstream that can be dangerous if he ascends too quickly Nitrogen

Final Jeopardy! Round clues (0 results returned)

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