Please help and if you can please explain how you got that answer

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.

What is the lowest number energy level where a d sublevel is found

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?