H 2 CO3(ag) H 2 O+CO2(g)

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Compare and contrast solutions and suspensions