Draw the curved arrow mechanism for the addition of hcn in water with naoh to heptan-4-one to give the corresponding cyanohydrin in the fewest steps. draw the arrows that lead to the resonance structures with full octets around each atom other than hydrogen. draw all electrons and charges if necessary on all structures; do not show any inorganic side products or counterions. reagents needed for each step are provided in the boxes.

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.

True or false exosphere is the least dense