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5 votes
5 votes
Solid copper (III) wire reacts with sulfur in a synthesis reaction. If 1.35*10^25 atoms of

copper react with 15.0 grams of sulfur, how many grams of product will be produced and
how much excess reactant will be left over?

User Tomatentobi
by
2.9k points

1 Answer

17 votes
17 votes

Moles of copper

  • No of molecules/Avagadro no
  • 1.35×10²⁵/6.022×10²³
  • 0.022×10^²
  • 2.2moles

Mass of copper

  • 2.2(63.5)
  • 13.97g

Now

According to law of conservation of mass

Mass of products=Mass of reactants

  • 13.97+15
  • 28.97g
User Siddharth Sonone
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3.5k points