Three students are mixing the same type of solute in 500 ml of water. jessica is heating her solution, larry left his on the counter at room temperature, and hunter is heating his solution while stirring it. which ranks who would fully dissolve the solute, from first to last?

Explanation:

When two or more substances are mixed together then it results in the formation of a substance known as mixture.

When Jessica heat the solution then particles of both solute and solvent gain kinetic energy. As a result, more number of collisions take place due to which rate is increase in rate of reaction.

When Larry left the solution still on the counter then there occurs no disturbance between the solute and solvent particles. As a result, rate of reaction is not able to increase.

When Hunter is heating his solution while stirring it then there will be much more collisions between the solute and solvent particles. As a result, rate of reaction will increase much faster.

Therefore, we can conclude that ranks who would fully dissolve the solute, from first to last are as follows.

                            Hunter > Jessica > Larry

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.