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counting atoms for dickson only

Counting Atoms Write the number of each type of atom in the following chemical formulas.   1.     NaCl    2.     H 2SO4              3.     KNO 3  4.     CaCl 2                     5.     C 2H6                6.     Ba(OH) 2                      7.     NH 4Br              8.     Ca 3(PO4)2                             9.     Al 2(SO4)3                                10.  Mg(NO 3)2

Engineering Exam with Matlab

Hello, I have Exam tomorrow at 12:00 pm Eastren Time Zone (-05:00) UTC. The exam going to be look alike the attachemnt that I have on here. please if you see yourself not able to answer one question of those in this parctice exam do not waiste my and your time.