How many grams of oxygen are present in 76.8 g of CO₂? A)1.75 g B)55.8 g C)27.9 g D)48.9 g

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Quizplus · Accepted Answer

The molecular formula for CO₂ is not standard chemical notation, but assuming it's a typo and the intended compound is COS (Carbon Oxysulfide), we can calculate the mass of oxygen in 76.8 g of COS. The molar mass of COS is approximately 60.07 g/mol (12.01 for C, 16.00 for O, and 32.06 for S). The fraction of the molar mass that is oxygen is 16.00/60.07. To find the mass of oxygen in 76.8 g of COS, multiply the total mass by the fraction that is oxygen: (76.8 g) * (16.00/60.07) ≈ 20.4 g. However, none of the provided options match this calculation, suggesting either a misunderstanding of the compound's formula or a mistake in the calculation. Given the options and assuming a possible miscalculation or misunderstanding, the closest match or plausible method based on typical calculation errors is not directly identifiable without the correct formula or further clarification. Therefore, the response is based on the assumption that the question intended to ask about a compound containing oxygen, and the calculation error was made in interpreting the provided options.

How Many Grams of Oxygen Are Present in 76