Misc: a bowl of ---------- contains twice as much sodium as a bowl of potato chips?

Questions

What subject is covered in the mag 'bondage?

What U S states were named for the Sioux word "friend"or"ally?

What vitamin is most commonly added to milk, because it is not found in milk naturally?

What vitamin is sometimes called the 'sunshine vitamin?

What kind of clay can potters heat to a higher temperature earthenware or stoneware?