To verify the data to make the results stronger and more reliable.
Answer:
The two variables affecting the rate of diffusion are the concentration gradient and size of the molecule. Concentration gradient: The movement of the substance is generally along the concentration gradient of the solute and it moves from a region of its higher concentration to a region of its lower concentration.
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.
Answer:D
Explanation: since m^2 is a measure of area, not volume
Yes, from all the examples I can think of
Negative: Chloride, Bromide, Iodide
Positive: Sodium, Silver, Mercury