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anonymous

  • one year ago

How many grams of Aluminum metal are needed to completely react 55.0 grams of solid elemental Sulfur in order to make solid Aluminum Sulfide?

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  1. UnkleRhaukus
    • one year ago
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    First you need to determine how many atoms of each element appear in the compound, — use a periodic table to determine the valence of species

  2. anonymous
    • one year ago
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    Thank you. What do I do after I find the molecular masses?

  3. anonymous
    • one year ago
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    Find how many moles (mass/molecular_mass) 55.0 grams of solid Sulfur: "55/32" -> 1.71875... Check relation of moles of sulfur and aluminum from chemical equation: "2Al + 3S = Al2S3" -> 2/3 Calculate the number of moles alluminium you need for comletely react with 1.71875 mol Sulfur: "1.71875/3*2" -> 1.14583... Finally - count the number of grams 1.14583... mol alluminium is (mol * atomic_mass): "1.14583 * 27" ->30.9375...

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