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 Magnesium [Mg] in Magnesium oxide [MgO]

  60

  12

  50

  30

 
Hint      

2.

Percentage of Oxygen [O] in Potassium bicarbonate [KHCO3]

  48

  12

  40

  39

 
Hint      

3.

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

  12

  48

  30

  40

 
Hint      

4.

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

  12

  2.5

  50

  60

 
Hint      

5.

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

  50

  30

  48

  40

 
Hint      

6.

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

  20

  57.5

  1

  70

 
Hint      

7.

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

  40

  2.5

  57.5

  60

 
Hint      


 
58 more pages in Chemistry Quiz Activities


Contact Info © 1999-2017 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-