Answer:
Valence electrons of selenium will be placed in s and p-orbitals.
Explanation:
Hope this helps.
Answer:
An inclined plane is a machine because it makes horizontal surface that make easier for us to move objects to higher or lower surfaces.
Typically the solvent used for the chromatography is rather volatile. So, its likely that the entire solvent will evaporate prior to the completion of the chromatography if the container isn't covered.
Answer: colloid
Explanation: The colloid is a mixture in which particles from one substance is suspended into particles of another substance. The particles of the colloids remain dispersed and they do not settle at the bottom of the container. The mixture appear in cloudy appearance. The particles of the mixed substances cannot be separated from each other in a colloidal mixture.
On the basis of the above description, and comparing the features of the skin lotion this can be said that the lotion is colloidal mixture.
