18 Nov 2021
Problem 106
Page 121
Section: Cumulative Problems
Chapter 3: Molecules, Compounds, and Chemical Equations
Textbook ExpertVerified Tutor
18 Nov 2021
Given information
The percentage by mass of oxygen in chromium containing compound 
is 
Step-by-step explanation
Step 1.
The percentage by mass of oxygen in chromium containing compound is
The molar mass of oxygen 
, iron (
), and chromium (
) is 
, 
, and 
respectively.
The molar mass of oxygen 
in 
is 
The molar mass 
of is calculated by the formula,
......(1)
Where,
-
is molar mass of oxygen in . -
is mass of oxygen.
Substitute the values of and in equation (1).
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Solutions
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