When sound waves enter the eardrum, they strike a lightly stretched membrane over the entrance to the middle ear. What happens to this membrane that allows sound to be transmitted to the inner ear?

Easy definition for atom and atomic mass

What is the density of the black hole

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.