In this task, you are given a sentence in the English language. Your job is to translate the English sentence into the Spanish language.

Eriochrome black T is an indicator that is commonly used in Analytical Chemistry, in assessments
El negro de eriocromo T es un indicador que se utiliza habitualmente en Química Analítica, en las valoraciones

It would be a health promotion strategy
Sería una estrategia de promoción de salud

In the structure of a nucleic acid chain

En la estructura de una cadena de ácido nucleico