KMnO4 solutions are magenta/purple in color, with the depth of the color dependingon the concentration (very concentrated solutions may look almost black.) Based onyour data for the wavelengths absorbed by the solution, explain why it is purple. Careful!Remember that the process responsible for the color of the solution isdifferent from the process that is responsible for the colors of the gas discharge tubesand flames tests.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .