Que vas a pedir means "What are you going to order or ask" this phrase is used when talking to a waitor
Que vas a hacer translates to "What are you going to do?"
"Que vas a hacer mañana" means "What are you going to do tomorrow?" in Spanish.
"Que vas a estudiar mañana" means "What are you going to study tomorrow?" in Spanish.
"Que le vas a de sir" is not a correct phrase in Spanish. It appears to be a grammatically incorrect construction. If you meant to say "¿Qué le vas a decir?" it translates to "What are you going to tell him/her?"
Est-ce que tu vas ... means 'are you going ...' in French.
Que vas a hacer translates to "What are you going to do?"
"Que vas a hacer ahora?" means "What are you going to do/make now?"
"Que vas a hacer mañana" means "What are you going to do tomorrow?" in Spanish.
Por que vas in English means: Why are you going? The 'you' seems an error for 'te' = 'you'. Por que te vas = Why are you going away
"Que vas a estudiar mañana" means "What are you going to study tomorrow?" in Spanish.
Que vas a hacer el domingo proximo means what are you going to do next Sunday?
What school do you go to ?
It means: "What restaurant are you going to"
literally, 'to what are you going to dedicate yourself to'
"Que le vas a de sir" is not a correct phrase in Spanish. It appears to be a grammatically incorrect construction. If you meant to say "¿Qué le vas a decir?" it translates to "What are you going to tell him/her?"
If the original is actually: "¿Qué? ¿No vas a venir?" it would translate to "What? You are not going to come?"
Est-ce que tu vas ... means 'are you going ...' in French.