Accent is the correct spelling if you are referring to the dialogue/language pronunciation.
Ascent is the correct spelling if you are referring to a high mountain or climbing a mountain.
Le desert ( desert takes an accent on the first e)
popular no written accent, spoken accent on lar
Si (with an accent on the 'i'. Without the accent, it means 'if')
No. Now, if you spell it out as "televisión", you do use an accent mark.
subterraneo (with an accent on the 'a')
maximo (accent on the 'a')
Diecisiete is the 17. There is no accent.
Jehova (with an accent on the 'a')
The correct spelling is queueing (lining up).
Perú is the spelling in Spanish. Note it is the same, except for the accent.
habitacion (accent on the 'o') cuarto
celebracion accent over the "o"