Multiple Choice
A compound consists of only magnesium, carbon, and oxygen. If the percentage by mass of Mg is 28.8% and that of C is 14.2%, what is the percentage by mass of O?
A) 16.0%
B) 57.0%
C) 43.0%
D) 22.5%
E) None of the above
Correct Answer:
Verified
Correct Answer:
Verified
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