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1 answer:

7 0

Use Calcium Chloride. sucrose doesn't break apart so it won't decrease the freezing point much, NaCl is better because you have twice as many ions running around than sucrose, and CaCl2 is the best because it has 3 ions dissolved instead of 1 or 2 like the others.

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For the substituted cyclohexane compound given below, highlight the groups – by clicking on atoms – that will sterically interac

Usimov [2.4K]

Answer:

In given structure of substituted cyclohexane select the "Bromine" atom as the answer.

Explanation:

1,3-Diaxial Interactions:

As cleared from name, this type of interactions are found in cyclic alkanes in which one group present at position 1 (assumed number) experiences steric hindrance due to another group present at position 3.

Also, it is necessary that both the groups must be occupying either axial or equatorial positions respectively. For example, in given structure the methyl group at position 1 is at axial position and another bulky group which should interact with this methyl group must occupy axial position at carbon 3 next to carbon 1. Hence, as shown in figure, the Bromine atom is present at third carbon and is at axial position too.

In attached picture, the green lines indicate steric interactions between Methyl group and Bromine atoms which are involved in steric interactions in 1,3-diaxial fashion.

8 0

3 years ago

Read 2 more answers

How do the number of electrons in an energy level affect bond formation?

BigorU [14]

Concept:

When an atom has incomplete number of electron in its outermost orbit then it has great tendency to react with another atom which satisfies their octate either by sharing or by transferring their electrons. The involved electrons are called valence electrons. These electrons will effect the energy level because of the transition of these electrons from one energy level to another energy level.

In case of electrovalent compound, the valance electron complete their octate by transferring their valence electrons while in the covalent compound, they complete their octate by the sharing of their valence electrons.

Hence, the valence electron of the atom effect the energy levels by the transition from one state to another state in the bond formation.

8 0

3 years ago

How many hydrogen bonds will be found within an alpha helix that is 18 amino acids long?.

LekaFEV [45]

An alpha helix which is 18 amino acids long will have 12 hydrogen bonds.

<h3>What is alpha helix (α-helix) ?</h3>

The alpha helix (α-helix) is a common in the secondary structure of proteins and is a right hand-helix conformation in which every backbone N−H group hydrogen bonds to the backbone C=O. group of the amino acid located four residues earlier along the protein sequence.

The alpha helix is stabilized by hydrogen bonds (shown as dashed lines) from the carbonyl oxygen of one amino acid to the amino group of a second amino acid.

Because the amino acids connected by each hydrogen bond are four apart in the primary sequence, these main chain hydrogen bonds are called "n to n+4.

Learn more about protein structure here ;

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5 0

2 years ago

True or false? In giant covalent structures the atoms form strong bonds by sharing electrons.

schepotkina [342]

Answer:

its false you know hehehehheh

6 0

2 years ago

A solution contains 3.1 mM Zn(NO3)2 and 4.2 mM Ca(NO3)2. The p-function for Zn2+ is _____, and the p-function for NO3- is _____.