Translate the given Spanish text to English

[Q]: The preparation involves a hydrocyanation reaction.
[A]: La preparacion involucra una reaccion de hidrocianacion.


[Q]: The frozen confectionary product has an overrun of preferably 0%-120%.
[A]: Preferentemente, el producto dulce congelado tiene un contenido de aire de 100%-120%.


[Q]: Disclosed are methods for removing rust from a ferrous metal-containing surface.
[A]:
Se describen métodos para retirar herrumbre de una superficie que contiene metal ferroso.