Translate the given Spanish text to English
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Question: The block copolymers are modified with a salt forming group.

Answer: Los copolimeros de bloques son modificados con un grupo formador de sal.


Question: The frozen confectionary product has an overrun of preferably 0%-120%.

Answer: Preferentemente, el producto dulce congelado tiene un contenido de aire de 100%-120%.


Question: An expandable pulley (100).

Answer:
Una polea expansible (100).