About 99.95% of an atom's mass is in which part?

973 dress white caps were tossed in the air at which Hudson River site on May 28, 1986? The vast majority of Greece's population belongs to which church? Which airline's longtime slogan was "Fly the Friendly Skies"? In 987, Hugh Capet founded a royal dynasty in which country? A feud followed in the 1840s when American actor Edwin Forrest made which sound while watching his rival William Macrea… A 1-pound tin of premium sevruga can go for more than $2,000. What is it? In American slang, what is a $10 bill called? A 10-square-mile area covers 6,400 of which units?