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 Iron [Fe] in Ferric oxide [Fe2O3]     Hint       160
Percentage of Oxygen [O] in Ferric oxide [Fe2O3]     Hint       270
Percentage of Magnesium [Mg] in Magnesium oxide [MgO]     Hint       330
Percentage of Oxygen [O] in Magnesium oxide [MgO]     Hint       440
Percentage of Hydrogen [H] in Potassium bicarbonate [KHCO3]     Hint       51


 
58 more pages in Chemistry Quiz Activities


Contact Info © 1999-2018 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-