Counting Atoms
Write the number of each type of atom in the following chemical formulas.
1. NaCl
2. H2SO4
3. KNO3
4. CaCl2
5. C2H6
6. Ba(OH)2
7. NH4Br
8. Ca3(PO4)2
9. Al2(SO4)3
10. Mg(NO3)2