Can somebody help me with this?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What’s the theoretical yield of solid lead

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.