What is the volume of a 1 lb bag of sugar?

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.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these