Si 40 g de un compuesto C6H10O5 se disuelven en 500 g de agua, determine el punto de ebullición de esta solución. (Agua: temperatura de ebullición 100 °C y Ke = 0,52 °C/m)

The question is: If 40 g of a compound C6H10O5 are dissolved in 500 g of water, determine the boiling point of this solution. (Water: boiling temperature 100 ° C and Kb = 0.52 ° C / m).

The boiling point of given solution is .

Explanation:

Given: Mass of solute = 40 g

Mass of solvent = 500 g (1 g = 0.001 kg) = 0.5 kg

Molality is the moles of solute present in kg of solvent.

Moles is the mass of substance divided by its molar mass. Hence, moles of (molar mass = 162.141 g/mol) is calculated as follows.

Now, molality of the solution is calculated as follows.

The boiling point is calculated as follows.

where,

m = molality

Substitute the values into above formula as follows.

As the boiling point of water is 100 degree Celsius. So, the boiling point of solution is as follows.

Thus, we can conclude that the boiling point of given solution is .

The explanation that the researcher can give for the fact that the color of the leaves of both plants has not changed is that receive the same radiation from the sun .

Explanation:

English:

A researcher observes two plants of the same species, but with different adaptations. Plants A have green leaves, very deep roots with very dense hairs. Plants B, on the other hand, have very shallow roots, the density of their villi is less dense, although the colour of the leaves is the same. What explanation can the researcher give for the fact that the colour of the leaves of both plants has not changed?

Option for this question:

The coloration of leaves in plants depends on the interaction of sunlight with photosynthetic pigments, such as chlorophyll, found in their leaves.

From the idea that both plants are of the same species, it can be inferred that both have the same composition of photosynthetic pigments in their leaves, the amount of sunlight they receive being the factor that makes them have the same coloration, without changes.

The adaptations they possess and which differentiate them are the roots, which are responsible for the absorption of water and nutrients from the soil, which does not influence the color of the leaves.

Learn more:

Photosynthesis in a leaf