After one half-life (4.5 billion years), what percent of the original uranium remains? After two half-lives (9 billion years), what percent of the original uranium remains?

After three half-lives (13.5 billion years), what percent of the original uranium remains?

After four half-lives (18 billion years), what percent of the original uranium would remain?

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

What is a difference between a mixture of elements and a mixture of compounds