Syvum Home Page   NY Regents Exam   Teasers   IQ Tests   Chemistry   Biology   GK   C++   Recipes   Search

Home > Quiz Games > Chemistry >

Chemistry : Percentage Composition of Chemical Compounds



What is the percentage of an element in each chemical compound whose formula is given below? Type only the number as your answer.
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.

 Percentage of Carbon [C] in Potassium bicarbonate [KHCO3]

  1

  48

  12

  40

 
Hint      

2.

 Percentage of Oxygen [O] in Calcium carbonate [CaCO3]

  2.5

  30

  48

  40

 
Hint      

3.

 Percentage of Magnesium [Mg] in Magnesium sulfate [MgSO4]

  50

  20

  2.5

  30

 
Hint      

4.

 Percentage of Sodium [Na] in Sodium hydroxide [NaOH]

  40

  1

  57.5

  60

 
Hint      

5.

 Percentage of Sulfur [S] in Sulfur dioxide [SO2]

  12

  1

  48

  50

 
Hint      

6.

 Percentage of Hydrogen [H] in Sodium hydroxide [NaOH]

  57.5

  20

  70

  2.5

 
Hint      

7.

 Percentage of Hydrogen [H] in Potassium bicarbonate [KHCO3]

  12

  48

  1

  40

 
Hint      


 
58 more pages in Chemistry Quiz Activities


Contact Info © 1999-2020 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Chemistry Quiz Activities
Molecular Weights of Chemical Compounds
Next
-
Chemistry Quiz Activities
Percentage Composition of Chemical Compounds