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Counting Atoms
   

Determine the number of each type of atom in these formulas:

1.     HgCO3
Hg   ________

C   ________

O   ________

 
2.     2 NH4CN
N   ________

H   ________

C   ________

 
3.     Mg(C2H3O2)2
Mg   ________

C   ________

H   ________

O   ________

4.     3 Ca3(PO4)2
Ca   ________

P   ________

O   ________

 
5.     4 Zn(NO3)2
Zn   ________

N   ________

O   ________

 
6.     3 CuSO4 • 5H2O
Cu   ________

S   ________

O   ________

H   ________

 

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Jim Askew  

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