A male bitch. -- It is actually closer to man-whore.
"en" means "in" or "on"
'en un' = 'in a'
en el = in/on the
in
"Hablas en español" means "Do you speak in Spanish?" in English.
Contented en Spanish is: contentos.
"Vino en" can mean either "wine in" or "he (or she) came in," but it would not be the end of the sentence in Spanish.
brightness in
In our(s)
en tu pagina is Spanish for in your page
I will assume you mean "What is 'can you write in Spanish?' translated into Spanish". The phrase in Spanish is "¿Puedes escribir en español?".
"Hablenme en espa" is not a complete phrase in Spanish. It seems like it might be cut off. "Hablenme en español" would mean "Speak to me in Spanish."