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Marieliseorane
@Marieliseorane
April 2019
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Bonjour ! pourriez vous m'aider ?
consigne : ajuster les nombres dans les équations chimiques suivantes :
merci d'avance !
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nathalienouts
N₂ + 2H₂ ---> N₂H₄
2C₂H₆ + 7O₂ ----> 4CO₂ + 6H₂O
CuO + 2H⁺ -------> Cu²⁺ + H₂O
11H₂O + 12CO₂ ------> C₁₂H₂₂O₁₁ + 12O₂
CH₄ + 2Cl₂ -------> C + 4HCl
C₂H₆O + 3O₂ ------> 3H₂O + 2CO₂
Zn + 2H⁺ --------> Zn²⁺ + H₂
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Marieliseorane
merci beaucoup ! c'est quoi les carrés ?
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2C₂H₆ + 7O₂ ----> 4CO₂ + 6H₂O
CuO + 2H⁺ -------> Cu²⁺ + H₂O
11H₂O + 12CO₂ ------> C₁₂H₂₂O₁₁ + 12O₂
CH₄ + 2Cl₂ -------> C + 4HCl
C₂H₆O + 3O₂ ------> 3H₂O + 2CO₂
Zn + 2H⁺ --------> Zn²⁺ + H₂