
Interpretation:
The mass of oxygen gas should be predicted.
Concept Introduction:
Mole is the amount of the substance that contains the same number of particles or atoms or molecules. Molar mass is defined as an average

Answer to Problem 54A
Mass of O2 = 1.34 g
Explanation of Solution
The given reaction is shown below:
Given information:
Mass of sodium peroxide = 3.25 g
Molar mass of sodium peroxide = 77.98 gmol-1
The calculation of moles is shown below:
The calculation of mass of O2 is shown below:
Mass of O2 = 1.34 g
Chapter 9 Solutions
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