Possible Clues:

• ____’s law: With equal temperature and pressure, equal volumes of two gases contain equal numbers of molecules
• A governor set up with a wicked rod -- man of law
• Briefly declare a doctor in turn a physicist
• Italian physicist giving name to a constant
• In a gas way, this scientist has a number that sounds a lot like an avocado?
• Good eggs coming north on road rebuilt for scientist
• ---'s constant, number of specified elementary units in a mole of a substance
• Scientist whose name is associated with a number
• Good eggs coming up road rebuilt for scientist
• ---'s number