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A research team led by Lund University in Sweden has provided an important clue to the origin of the element Ytterbium in the Milky Way, by showing that the element largely originates from supernova explosions. The groundbreaking research also...
Today, the colorless and deadly gas cyanide is known as a fast-acting poison and a chemical weapon. Four billion years ago, however, it may have been
Photo courtesy A. Loudermilk We'll give you a hint: It's not 867-5309. That's Jenny's number, not Avogadro's. You're also not going to find these digits scrawled in marker on the wall of the public bathroom. You will, however, discover it within the pages of a standard chemistry textbook: It's 6.0221415 × 10 23. Written out, that's 602,214,150,000,000,000,000,000 [source: Fox]. Short on time? Just call it a mole. Just like a dozen is 12 things, a mole is simply Avogadro's number of things. In chemistry, those "things" are atoms or molecules. In theory, you could have a mole of baseballs...