How many grams of oxygen are in 45 g of C₂H₂O₂? A)8.3 B)9.3 C)17 D)25 E)31

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Quizplus · Accepted Answer

The molar mass of C₂H₂O₂ is 62 g/mol. So, 45 g of C₂H₂O₂ is equal to 45 g / 62 g/mol = 0.726 mol. Each mole of C₂H₂O₂ contains 2 moles of oxygen. So, 0.726 mol of C₂H₂O₂ contains 0.726 mol * 2 = 1.452 mol of oxygen. The molar mass of oxygen is 16 g/mol. So, 1.452 mol of oxygen is equal to 1.452 mol * 16 g/mol = 23.23 g.

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How Many Grams of Oxygen Are in 45 G of C₂H₂O₂