Multiple Choice
A compound consists of only magnesium, carbon, and oxygen. If the percentage by mass of Mg is 63.9% and that of C is 12.2%, what is the percentage by mass of O?
A) 76.1%
B) 23.9%
C) 51.7%
D) 70.9%
E) None of the above
Correct Answer:
Verified
Correct Answer:
Verified
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