2) un laboratorio al estudiar las propiedades de una sustancias química desconocida, obtiene los siguientes resultados : a) x es un sólido blanco a temperatura ambiente. b) x tiene punto de función de 200°C , aproximadamente . c) x se disuelve en agua para dar una coloreada. d) Al someterla a electrólisis , de x se obtiene mas de un producto. e)x forma un sólido blanco al calentarlo en presencia de aire. Determina cuál de estos resultados corresponde a una propiedad física o quimica de la materia y si la sustancia analiza es un elemento o un compuesto quimico

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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The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.