1. The Kuiper Belt is a region beyond Neptune that is 55 astronomical units (AU) from the Sun. It contains smaller
bodies that scientists think are pieces left over from the
formation of the Solar System. Which of the following best
states how scientists know that the Kuiper Belt is part of
our solar system?

For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate,m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2

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?

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?