El volumen en mililitros que se requieren para preparar 2 litros de Ácido Clorhídrico (HCL) 0,25 M, a partir de una solución de HCL 33% masa/masa y densidad 1,17 gr/ml, es: . Calcule el Factor de dilución realizado en el ejercicio y que le indica este. Proceso

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost

Chortling is used to clean water. another possible atom that would also work is a. sodium b. sulfur c. bromine