If an endothermic reaction is at equilibrium, how will the equilibrium shift when heat is added to the reaction? View Available Hint(s)

What is the hybridization of the central atom? \( s p \) \( s p^{2} \) \( s p^{3} d^{2} \) \( s p^{3} \) \( s p^{3} d \)

Question 1 Releasing agents are used in atomic emission spectroscopy to prevent O Cationic interference O Anionic interference Ooth anionic and cationic O Physical interference

Which of the following is an example of anionic interference in atomic emission spectroscopy? O Interference of high concentration of sodium ions in assay calcium ions. Interference by formation of less volatile salt with sulphat by calcium. Decreased drop size of the analyte solution by alcohols.

À l'aide des documents, dire si l'eau oxygénée peut mettre en évidence une tache de sang et décrire ce que doit observer Justine si elle en applique sur la tache. S'appuyer sur des équations d'oxydoréduction pour étayer vos propos.

28. \( \mathrm{HgO} \rightarrow \mathrm{Hg}+\mathrm{O}_{2} \)