Problem Answer

The larger number of moles corresponds to the larger number of atoms. In this case, moles of phosphorus = 1.54 and moles of sulfur = 2.52, thus there are more atoms of sulfur.

By way of example, moles of phosphorus = (47.6 g)*(1.00 mole/31.0 g) or 1.54.


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Calculate Stoichiometry Expression

Comparing Atom Count


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Problem


Which of the following element samples contains the greater number of atoms? Atomic Masses: P=31.0 S=32.1 amu.


   47.6 grams of phosphorus 
   80.9 grams of sulfur 

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