Calculer le bilan énergétique de la neutralisation suivante :
HCl + NaOH → NaCl +H₂O...
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One similarity and one difference between an element and a mixture of elements
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Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.
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Chemistry, 23.06.2019 16:30
Which of the following subject areas contains questions that can be answered by science? alchemy ethics forensics politics
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Chemistry, 23.06.2019 19:20
How did albert einstein explain the photoelectric effect? a) light is made up of electrons b) light is made up of atoms c) light is made up of electricity d) light is made up of photons
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