The correct option is (b)
NaNH2 is an effective base. It can be a good nucleophile in the few situations where its strong basicity does not have negative side effects. It is employed in elimination reactions as well as the deprotonation of weak acids.Alkynes, alcohols, and a variety of other functional groups with acidic protons, such as esters and ketones, will all be deprotonated by NaNH2, a powerful base.Alkynes are deprotonated with NaNH2 to produce what are known as "acetylide" ions. These ions are powerful nucleophiles that can react with alkyl halides to create carbon-carbon bonds and add to carbonyls in an addition reaction.Acid/base and nucleophilic substitution are the two types of reactions.Using the right base, terminal alkynes can be deprotonated to produce a carbanion.A good C is the acetylide carbanion.The acetylide carbanion can undergo nucleophilic substitution reactions because it is a potent C nucleophile. (often SN2) with 1 or 2 alkyl halides with electrophilic C to create an internal alkyne (Cl, Br, or I).Elimination is more likely to occur with 3-alkyl halides.It is possible to swap either one or both of the terminal H atoms in ethylene (acetylene) to create monosubstituted (R-C-C-H) and symmetrical (R = R') or unsymmetrical (R not equal to R') disubstituted alkynes (R-C-C-R').
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Answer: This is evidence that the solution a mixture.
Explanation:
Mixture :
- It is defined as a substance which is made by mixing two or more different materials.
- No chemical reaction occurs between the mixed materials.
- Usually mixture can be separated into its original components.
A solution in a dish contains 4.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporate is a mixture because it is made up two substances salt and water which can be easily separated out by the means of evaporation.
The charge of a drop is the product of number of particles with charge on electron as follows:
![Q = n e](https://tex.z-dn.net/?f=Q%20%3D%20n%20e)
Where n is number of electron
e is charge on electron ![= 1.6 * 10^-^1^9 C](https://tex.z-dn.net/?f=%3D%201.6%20%2A%2010%5E-%5E1%5E9%20C)
![Q is charge = 4.8 * 10^-^1^9 C](https://tex.z-dn.net/?f=Q%20is%20charge%20%3D%20%204.8%20%2A%2010%5E-%5E1%5E9%20C)
![4.8 * 10^-^1^9 = n (1.6 * 10^-^1^9)](https://tex.z-dn.net/?f=4.8%20%2A%2010%5E-%5E1%5E9%20%3D%20n%20%281.6%20%2A%2010%5E-%5E1%5E9%29)
n = 3
Thus, 3 electrons are present .
The answer is that Phosphatidylcholine<span> is a chemical contained in eggs, soybeans, mustard, sunflower, and other foods. The term "</span>phosphatidylcholine<span>" is sometimes used interchangeably with "lecithin," although the two are different. Choline is a component of </span>phosphatidylcholine<span>, which is a component of lecithin.</span>
The answer would be Rocks, metals, hydrogen compounds, hydrogen and helium, all in gaseous form.