Don't used Ai solution and don't used hand raiting

Don't used hand raiting and don't used Ai solution

Give the structure(s) of the product(s) the reaction below, and be sure to indicate any relative stereochemistry (you can assume that each of the Diels-Alder reactions will proceed with endo selectivity). Draw out relevant enantiomer(s) if they are expected to form. If no reaction is expected to occur under the indicated conditions, then write "no reaction" or NR, and explain why you would expect nothing to occur. If more than one product is formed, please indicate which one will be the major product or if they will be formed in equal amounts. In all cases, equimolar amounts of both components/reagents are present unless indicated otherwise   I'm struggling to see how this reaction will go! I am wondering if it will cycle on itself but I'm not sure how I drew out a decagon but I'm a bit lost

Give the structure(s) of the product(s) for the reactions below, and be sure to indicate any relative stereochemistry (you can assume that each of the Diels-Alder reactions will proceed with endo selectivity). Draw out relevant enantiomer(s) if they are expected to form. If no reaction is expected to occur under the indicated conditions, then write "no reaction" or NR, and explain why you would expect nothing to occur. If more than one product is formed, please indicate which one will be the major product or if they will be formed in equal amounts. In all cases, equimolar amounts of both components/reagents are present unless indicated otherwise .

Calculate the residence time of strontium (Sr2+) in the world ocean, given that the average concentration of strontium in the world’s rivers is approximately 0.87 µmol L-1 (5 pts).

A package contains 1.33lbs of ground round. If it contains 29% fat, how many grams of fat are in the ground? 

How is the resonance structure formed to make the following reaction product.  Please hand draw the arrows showing how the electrons move to the correct position.  Do not use an AI answer.  Please draw it yourself or don't bother.

Part II Calculate λ max of the following compounds using wood ward- Fiecer rules a) b) c) d) e) OH OH dissolved in dioxane Br Br dissolved in methanol. NH₂ OCH 3 OH

6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element