Within the water cycles, where do individual water molecules reside the longest?

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

What is the cellular process that releases the energy stored in food molecules

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.