Which composer, who died in 1827, reportedly said on his deathbed, "I shall hear in heaven"?

Which often-sung song was originally titled "Good Morning to All" in 1893? Which gas, discovered in 1774, got its name from the Greek words for "acid-forming"? Which component of the blood is abbreviated Hb? Which Baroque composer's initials were J.S.B.? A compromise allowed Maine's admission to the Union in 1820 as a free state and which state in 1821 as a slave state? Which is the oldest campus of the University of California? Which word means a con game or swindle, as well as the police squad that breaks it up? What is a concluding section added to a literary work, often revealing what later became of the characters?