How many of the carbon–carbon bonds in the compound have staggered conformers that are all equally stable?
2 answers:
Answer : The 3 carbons which are bonded to have equally stable staaggered conformers.
There are 3 identical atoms of hydrogens in 2-methylhexane molecule (refer attached figure)
Therefore any degree of rotation of 60 or 180 or 300 in C-C bond will give a stable conformer of the same energy.
The image is attached for the stable staggered conformation.
In stereoisomers, there are two classifications: staggered and eclipsed conformations. The staggered conformation is when the bonds are not symmetric. Eclipsed is less stable than the staggered conformation. It actually depends on the compound. For example, the ethane is drawn in the staggered conformation, which only has 1 C-C single bond.
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Answer:
Explanation:
Density is found by dividing the mass by the volume.
The mass of the liquid is 12.7 grams.
We know that 15 mL of this liquid was added to a 50 mL graduated cylinder. Therefore, the volume is 15 mL. The 50 mL is not relevant, it only tells us about the graduated cylinder.
Substitute the values into the formula.
Divide.
Round to the nearest hundredth. The 6 in the tenth place tells us to round the 4 to a 5.
The density of the liquid is about 0.85 grams per milliliter and choice A is correct.