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Cobalt Oxide Used in Glazing Pottery Contains 71

Question 38

Multiple Choice

Cobalt oxide used in glazing pottery contains 71.06% cobalt and 28.94% oxygen by mass. What is the empirical formula of this cobalt oxide?


A) CoO
B) Co2O
C) CoO3
D) Co2O3
E) Co3O4

Correct Answer:

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