How many moles of oxygen atoms are in a 0.6163 grams of niacin, C6H5NO2?
A) 5.14 × 10 − 2 moles
B) 3.00 × 10 − 2 moles
C) 1.00 × 10 − 2 moles
D) 5.01 × 10 − 3 moles
E) 8.56 × 10 − 3 moles
Correct Answer:
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