need help on how to do C, D,E,. For example on how to set up the equations.

A. Measure out 2.87 moles of salt (NaCl) into a clear, dry cup. +0.372,421 Show work: C. Obtain a sample of copper metal (\#11) from your instructor and determine how many atoms it contains. Write your answer here: then show it to the instructor and return the sample. Show work: Show work: E. Measure out 0.0388 moles of ammonium sulfate into a blue, dry cup. 4321 Show work