if a red blood cell is placed in a salt solution and bursts, what is the tonicity of the solution relative to the interior of the cell?

What does the process of natural selection involve

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?