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Answer:

0.623 moles of H₂O.

Explanation:

  • balanced equation: 2C₂H₆ + 7O₂ -> 4CO₂+ 6H₂O

Given:

  • 6.23g of C₂H₆
  • C₂H₆ molar mass is 30

solve for moles of C₂H₆

  • moles = mass/mr
  • moles = 6.23/30
  • moles = 0.2077

solve for moles of H₂O using molar ratio

  • 2C₂H₆ : 6H₂O
  • 2 : 6
  • 0.2077 : 0.623

Therefore, found that 0.623 moles of H₂O is produced.

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