How many secondary carbons are found in 3-ethyl-4-methylheptane?
In secondary carbon,carbon
attach with single H-atom and 3 carbon atoms or Have double
bond
Use Newman projections to show both the most stable and the lest stable conformations for 4-ethyl-3-methylheptane as you look down the bond between carbons 3 and 4.
How many alkanes have two chiral centers? Select all that apply. a. octane b. 2-methylheptane c. 3-methylheptane d. 4-methylheptane e. 2,3-dimethylhexane f. 2,4-dimethylhexane g. 2,5-dimethylhexane h. 3,4-dimethylhexane i. 2,2-dimethylhexane j. 3,3-dimethylhexane k. 3-ethylhexane l. 2,3,4-trimethylpentane m. 2,2,3-trimethylpentane n. 2,3,3-trimethylpentane o. 2,2,4-trimethylpentane p. 3-ethyl-2-methylpentane q. 3-ethyl-3-methylpentane r. 2,2,3,3-tetramethylbutane
23) How do you find how many secondary or tertiary carbons a molecular formula? How many isomers from the molecular formulas C3H8, C4H10, and C5H12 have tertiary carbons. List answers with a comma. Explain answers thoroughly and show your work.
draw the structures
2-Ethyl1,4-dimethylcycloheptane Cis-1,3-diethyl cyclobutane Trans-1-bromo-3-ethylcyclopentane Cis-1,2-diethyl cyclopropane Trans-1,2-diethyl cyclopropane 2-methylheptane 4-ethyl-2,2-dimethylhexane 4-ethyl-3,4-dimethyloctane 2,4,4-trimethylheptane 3,3-diethyl-2,5-dimethylnonane 4-isopropyl-3-methylheptane
( points) Determine the molecular formula and how many tertiary and quaternary carbons are pre designation below. molecular formula and how many primary, secondary, y carbons are present by writing the correct number next to the Molecular Formula How many: 1º_2° 3° 4° carbons
How
many unique stereoisomers exist for 3-bromo,3-methylheptane
3-bromo, 3-methylhept are
c) Choose the name that Best Matches the compounds below nomenclature based on lUPAC 3R)-3-fluoro-4,5-dimethylhexane ii (4R)-4-fluoro-2,3-dimethylhexane iv (3S)-3-fluoro-4.5-dimethylhexane d) Which of the following products is incorrect? Br HBr ii)C iii)A iv)D i)B e) How many secondary (3°) carbons are found in 3-ethyl-4-methylheptane? (2 pts) iv. 2 i. 3 D What is the relationship between the following compounds? (2 pts) Br OH Br OH iv. constitutional isomers i. Diastereomers ii. Identical ili. enantiomers
how many primary carbons are in 2,2-dimethylpropane?
4. How many primary carbons are in 2,2-dimethylpropane? Ο 1 Ο 2 Ο Ο
Design a synthesis of ethyl 2-ethyl-3-oxohexanoate from alcohols containing 4 carbons or fewer. points COET alcohols containing 4 carbons or fewer Part 1 out of 9 Choose the best option for the precursor to the target molecule. Part 2 out of 9 19 Choose the best option for the carboxylic acid precursor to the intermediate ethyl butanoate. points TOET OET carboxylic acid alcohol oị © © carboxylic acid alcohol points ОН он о носH,CH, но Design a synthesis of ethyl...
How many hydrogen bonds are found in this region of
the secondary structure identified? Keep in mind this is a alpha
helix so hydrogen bonding occurs every 4th amino acid residue. It
says the answer to this 10. 2 but I don't see how. Could you
explain to me how you solve this and why that is the answer? Then,
I will rate :)
How many Hydrogen bonds found in this region of secondary structure?