Calculate the maximum numbers of moles and grams of H2S that can form when 140.1 g of aluminum sulfide reacts with 143.0 g of water: Al2S3+ H2O → Al(OH)3 + H2S [unbalanced]   ___________ mol H2S   ___________g H2S   What mass of the excess reactant remains?  ___________ (g)

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Calculate the maximum numbers of moles and grams of H2S that can form when 140.1 g of aluminum sulfide reacts with 143.0 g of water:

Al2S3+ H2O → Al(OH)3 + H2S [unbalanced]
 
___________ mol H2S
 
___________g H2S
 
What mass of the excess reactant remains?
 ___________ (g)
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