A plastic ball with a volume of 19.7cm^3 has a mass of 15.8g Would this ball sink or float in a container of gasoline?

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.

What is the overall order of reaction for rate = k[no2]2 ? second order 3/2 order third order zero order none of the listed answers are correct

Draw metallic bonding if two copper