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
Multiple choice | Fill in the blanks | Match the Columns

Your Performance  

Enter in the box the number corresponding to the right answer
Percentage of Hydrogen [H] in Sodium hydroxide [NaOH]     Hint       148
Percentage of Oxygen [O] in Potassium bicarbonate [KHCO3]     Hint       240
Percentage of Iron [Fe] in Ferric oxide [Fe2O3]     Hint       312
Percentage of Oxygen [O] in Magnesium oxide [MgO]     Hint       470
Percentage of Carbon [C] in Potassium bicarbonate [KHCO3]     Hint       52.5


 
58 more pages in Chemistry Quiz Activities


Contact Info © 1999-2021 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-