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Chemistry : Molecular Weights of Chemical Compounds


What is the molecular weight of each chemical compound whose formula is given below?
Given Atomic Weights:
H = 1 ; C = 12 ; N = 14 ; O = 16 ; Na = 23 ; Mg = 24 ; Al = 27 ;  P = 31 ; S = 32 ;
Cl = 35.5 ; K = 39 ; Ca = 40; Cr = 52; Mn = 55 ; Fe = 56 ; Cu = 63.5 ; Zn = 65 

Formats Info Page Quiz Review

Your Performance  

1.

Zinc sulfite - ZnSO3

  158

  145

  294

  122

 
Hint      

2.

Nitric acid - HNO3

  159.5

  63

  40

  145

 
Hint      

3.

Ferric oxide - Fe2O3

  294

  158

  160

  100

 
Hint      

4.

Potassium dichromate - K2Cr2O7

  294

  98

  58.5

  160

 
Hint      

5.

Hydrogen peroxide - H2O2

  40

  34

  100

  160

 
Hint      

6.

Ammonia - NH3

  132

  158

  64

  17

 
Hint      

7.

Magnesium oxide - MgO

  40

  56

  58.5

  159.5

 
Hint      


 
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