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June 2021
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On donne les informations suivantes:
-Masse d'un atome de carbone:
[tex] 2 fois10^{-26} [/tex]kg
-Masse d'un atome d'hydrogène:
[tex] 0,16fois10^{-26} [/tex]kg
- Composition d'une molécule de méthane (CH4)
4 atomes d'hydrogène
et 1 atome de carbone.
Calculer la masse en kilogramme d'une molécule de méthane ( on donnera le résultat en écriture scientifique )
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xxx102
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Bonjour,
On fait la somme des masses des atomes qui constituent la molécule.
Si tu as des questions, n'hésite pas ! =)
4 votes
Thanks 10
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Bonjour,On fait la somme des masses des atomes qui constituent la molécule.
Si tu as des questions, n'hésite pas ! =)