If the volume of a container of gas is reduced what will happen to the pressure?

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.

Compare and contrast refraction of light and sound will give brainliest

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.