6- Indicar, basandose en la diferencia de la electronegatividades, si las siguientes sustancias poseen ionicas o covalentes entre sus atomos
A) NaCl
B)H²0
C)NH³
D) CO²
E) CaO​

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

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