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Oxygen forms a number of compounds with sulfur, many of which are quite reactive. One such compound is 57.20 % by mass S . Calculate the number of grams of oxygen present in a sample of this compound that contains 40.00 grams of S . g O

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ajinems

The number of grams of oxygen present in a sample of this compound that contains 40.00 grams of S = 29.9g of oxygen

Calculation of quantity of Oxygen

The compound contains the following:

sulphur = 57.20%

Oxygen= 100 - 57.20 = 42.80%

If 57.20% of the sample contains 40g of sulphur then 42.80% of the sample will contain X.

Make X the subject of formula,

X = 42.8 × 40/57.20

X= 1712/57.20

X= 29.9g of oxygen

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