What method could be used to show the presence of this illegal colouring agent?

How many moles of al3+ ions are in 1.25 moles of al2o3

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Table sugar completely dissolved in water is an example of a?