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Yeah.Yeah. Yeah.Yeah.
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3 years ago
An oxide of iron has the formula Fe3O4. What mass percent of iron does it contain?


0.72%

28%

30%

70%

72%
Textbook 
Chemistry: An Atoms First Approach

Chemistry: An Atoms First Approach


Edition: 3rd
Authors:
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Bowmanette35Bowmanette35
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3 years ago
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