- ¿Qué otros materiales de tu entorno podrías utilizar que te permita mejorar tu filtrador de agua?

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

it should be all of them because it asks if you included all of those in your answer

explanation: