How many books are in the classroom? why? what?
The phrase "en la mesa hay mucho libros" is incorrect. It should be "en la mesa hay muchos libros" to match the plural form of "libros."
Hay muches alumnos en la clase means There are many students/pupils in the class
"¿Qué hay en clase?" translates to "What is there in class?" It is a question asking about the things or activities that are present or occurring in a classroom.
what is in that class
"Hay en la clase" means "There is in the class" in English.
It means there are books in the library.
"Is there a computer in your class?"
The litteral translation is - There are students in the class Mexico
How many female students are in your classroom and how many male students are there and is there a female or male teacher in your classroom and how many desks are in your classroom.
how many windows do you have in your class
Is there a computer in your class?
What is on the table or there on the table.