Understanding the Mole Ratio of Al2S3: Is it 3 to 1?

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Al2S3 indicates that each molecule contains 2 aluminum atoms and 3 sulfur atoms. Therefore, one mole of Al2S3 consists of 2 moles of aluminum and 3 moles of sulfur. The mole ratio of aluminum to sulfur in Al2S3 is 2:3, not 3:1. This distinction is crucial for understanding the composition of the compound. Accurate interpretation of chemical formulas is essential in stoichiometry.
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Homework Statement


say it says Al2S3(numbers are subscripts) is that saying you have 3 moles of sulfur?


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No it is not.
 
It means molecule of Al2S3 contains 2 atoms of Al and three atoms of S. It also means 1 mole of molecules of Al2S3 contain 2 moles of Al atoms and three moles of S atoms.
 

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