“La solubilidad de un soluto en un solvente es de 23gr de soluto por cada 100ml de agua, a 20°C. Si se tiene una solución acuosa en la que se disolvieron 2gr de dicho soluto en 100ml de agua”: a) ¿Se trata de una solución saturada o no saturada? ¿Por qué?
b) ¿Se trata de una solución diluida o concentrada? ¿Por qué?

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it