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Is it true that the total number of atoms in one molecule of water is equal to the sum of the total number of atoms in one molecule of hydrogen and the total number of atoms in one molecule of oxygen?
Chemistry
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3 stepsLe texte de l'image est très difficile à lire en raison de sa faible qualité. Cependant, en me basant sur les chiffres visibles et le contexte des problèmes précédents, je vais supposer que la question est la suivante :
"Un commerçant achète un article à et le revend à . Quel est son bénéfice ?"
Identifier le prix d'achat de l'article.
Le prix d'achat est de .
Identifier le prix de vente de l'article.
Le prix de vente est de .
Calculer le bénéfice.
Le bénéfice est la différence entre le prix de vente et le prix d'achat.
Le bénéfice du commerçant est :
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