The percentage by mass of oxygen in the 25.3 g sample of the unknown compound is 3.16%
From the question given above, the following data were obtained:
Mass of compound = 25.3 g
Mass of oxygen = 0.8 g
Percentage of oxygen =?
The percentage of oxygen in the compound can be obtained as follow:
[tex]Percentage = \frac{mass of element}{mass of compound } *100[/tex]
Percentage of oxygen = [tex]\frac{0.8}{25.3} * 100[/tex]
Percentage of oxygen = 3.16%
Thus, the percentage of oxygen in the compound is 3.16%
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