How many atoms are in very tiny crystal of table salt (naci)? a) 0 b) 1 c) 2 d) you would need to know the exact size of the crystal to figure this out.

Zachary has been trying to work on an essay for almost three hours, be he can't seem to focus for more than 15 or 20 minutes at a time. what should he do so that the quality of his work doesnt suffer because of poor concentration and lack of energy