Syvum Home Page

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 Sulfur [S] in Sulfur dioxide [SO2]

  48

  39

  20

  50

 
Hint      

2.

Percentage of Oxygen [O] in Sulfur dioxide [SO2]

  50

  1

  40

  48

 
Hint      

3.

Percentage of Carbon [C] in Calcium carbonate [CaCO3]

  12

  1

  48

  60

 
Hint      

4.

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

  60

  57.5

  20

  48

 
Hint      

5.

Percentage of Oxygen [O] in Magnesium oxide [MgO]

  48

  40

  12

  20

 
Hint      

6.

Percentage of Oxygen [O] in Sodium hydroxide [NaOH]

  40

  70

  1

  57.5

 
Hint      

7.

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

  2.5

  40

  60

  50

 
Hint      


 
58 more pages in Chemistry Quiz Activities


Contact Info © 1999-2019 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-