Both the brain and the spinal cord are protected by a. a thick, paste-like substance b. the skull c. a watery fluid d. the vertebral columnasap

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?

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

How does the motion of particles in a gas change as the gas cools