Science Help Online Worksheet 5-8a Percentage Composition
 
Name__________________________ Section____________________________

    

This page is designed to help students practice written problems, and is meant to be printed out.  Hit the print command and show all work in the spaces provided.   Round your answer to the correct number of significant digits and show work.

Calculate the percentage composition by mass of the following compounds
1) HgO

 

 

 

 

 

 2) Na2S
3) (NH4)2S

 

 

 

 

 

 4) Sr(NO3)2
1) 92.6% Hg,  7.37% O           2) 58.9% Na,  41.1% S           3) 41.1% N,  11.8% H,   47.1% S          4) 41.3% Sr,   13.2% N,  45.3% O

Please forward all questions, comments and criticisms to Gregory L. Curran.
© Copyright 2004 Fordham Preparatory School, All Rights Reserved.
Last Modified March 18, 2004