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The molar mass of oxygen is 16.00 g/mol. how many moles of oxygen are in copper oxide?
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The molar mass of oxygen is 16.00 g/mol. how many moles of oxygen are in copper oxide?

User Temo Tchanukvadze
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oxygen added to the copper is 3.300 grams.

89.920 - 83.620 = 3.300 g oxygen

which is 0.2063 moles of oxygen.

3.300 g O x (1 mol O / 16.00 g O) = 0.20625 mol
User Bcrist
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