What can we learn about past climate changes from ice cores?

Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

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.