consider a situation in which you analyze a mixture of the starting alcohol and the alkene product of an elimination reaction using tlc. if you used a reverse phase tlc plate, which compound would have the higher retention factor? group of answer choices the alkene

When we add 20% NaOH to our hexane diamine which is in aqueous phase, Option C. nylon to neutralize the HCl formed.

The NaOH reacts with the HCl to shape salt and water. This prevents the HCl from inflicting facet reactions, along with the viable addition of HCl to a C=C if one is gift inside the molecule.

The response of adipoyl chloride with 1,6-hexanediamine to shape Nylon 6,6 is used on this test. Nylon 6,6 is consequently a copolymer made by the chemical mixture of specific monomers.The two answers aren't miscible so the reaction can most effective occur on the interface.

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Answer:

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future.

Three straight chains containing 12 carbon atoms, 2 oxygen atoms  at the end is a saturated triglyceride.

What are saturated triglycerides?

Saturated triglycerides contain entirely of carbon-carbon single bonds in the structure. They have higher melting point compared to unsaturated triglycerides. Consuming saturated triglycerides in the large amount may lead to several cardiovascular diseases. Foods with high concentration of saturated triglycerides are butter, some fatty meats and cheese.

The saturated triglycerides are made up of carbon-carbon single bonds containing maximum number of hydrogen atoms. Unlike, saturated fats, unsaturated fats have carbon-carbon double bonds in them.

Therefore, 3 straight chains containing 12 carbon atoms, 2 oxygen atoms  at the end is a saturated triglyceride.

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Since 2 2.60 PPM singlet was seen for the /C-CH, Proton, and IHNMR data clearly showed the presence of acetophenone. IHNMR chemical with a multiplicity of 2.60 PPM is singlet, and there are 3 photons in total.

IHNMR chemical with a multiplicity of multiple number of photons of 7.49 to 7.45 PPM and a Proton number of 1. acetophenone number of photons in an IHNMR chemical with a multiplicity of 7.60 - 7.55PPM is multilaterally 2. IHNMR Chemical of multiplicity 7:98 - 7.94 PPM is multiplet no. of Proton is 2. So, Acetophenone chemical will be administered. Only one at proton comparatively shielded opposition and miter will give multiple in the benzene ring according to the IHNMR value of one singlet observed at 2–6 1 PPM. OxfordCryosystems.

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Answer:

Raise

Explanation:

One calorie (cal) is the amount of heat needed to raise the temperature of one gram of water one degree Celsius.

Reduction in tourism and Groundwater recharge are possible environmental impacts of flooding  .

What are floods ?

During floods, people need to quickly move themselves and their most valuable possessions to higher ground. Leaving home in search of a safer place is called evacuation. Floods occur at irregular intervals and vary in magnitude, duration and areas affected.

Water flows naturally from high ground to low ground. This means that low-lying areas can flood quickly before they start reaching higher elevations. In rivers, flooding can occur, especially at bends and meanders in the channel, when flow exceeds the bed's capacity. Floods often damage homes and businesses when they are in the natural floodplains of rivers.

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The equivalence point of the WASB would be slightly acidic, while the equivalence point of the SASB would be slightly basic. This is because the WASB has a higher concentration of hydronium ions than the SASB.

The hydronium ion is a key player in acid-base reactions. It is the hydrogen ion that is donated or accepted in an acid-base reaction. The higher the concentration of hydronium ions, the more acidic the solution.

In an acid-base reaction, the acid donates a hydrogen ion to the base. The base accepts the hydrogen ion. This creates a new molecule of water. The equivalence point is the point at which the acid and base have reacted in a 1:1 ratio. At this point, the solution is neutral.

If the acid has a higher concentration of hydronium ions than the base, then the equivalence point will be slightly acidic. This is because there will be more hydronium ions present than there were at the start of the reaction.If the base has a higher concentration of hydronium ions than the acid, then the equivalence point will be slightly basic.

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The attraction between the electron and the atom's nucleus grows stronger as it travels closer to it. The electron goes to a lower potential energy. The electron transition involves the most in n=6 and n=2.

More energy must be changed for a larger movement. The electric charge of the electron, a subatomic particle, is a negative one elementary charge. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically considered to bepotential energy.

The energy that an object retains due to its position in relation to other objects, internal stresses, electric charge, or other factors is known as potential energy in physics.

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The masses of the solutions are; 0.34 g, 0.95 g and 2.9 g respectively.

We know that in the process of electrolysis, it is possible that we can be able to deposit a given mass of the metal when we pass a direct current through the solution.

We then have;

Quantity of current passed through each solution = 100 * 10^-3 A * 4 * 60 * 60 = 1440 C

Solution 1;

23 g of sodium is deposited by 96500 C

x is deposited by 1440 C

x = 0.34 g

Solution 2

63.5 g is deposited by 96500 C

x is deposited by 1440 C

x = 0.95 g

Solution 3;

197 g is deposited by 96500

x is deposited by 1440 C

x = 2.9 g

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One of the four general catalytic methods used by serine proteases is catalysis by approximation.

Endo proteases come in several forms, including serine proteases. They are, nonetheless, quite common in both prokaryotes and eukaryotes. Protease A, a chymotrypsin-like protease from Stremptomyces griseus, has a primary sequence very different from chymotrypsin, but its overall tertiary structure is very similar to chymotrypsin.

The positions of the catalytic triad amino acids in the primary sequences of the protein are very similar, indicating that the genes for the proteins diverged from a common precursor gene. B. subtilisin, a serine protease, in contrast, Subtilis shares only a small amount of tertiary structural homology with chymotrypsin. But when folded, it also possesses a catalytic triad (Ser 221 - His 64 - Asp 32) akin to chymotrypsin's (Ser 195 - His 57 - Asp 102).

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A nucleoside triphosphate containing a 5-carbon deoxyribose sugar and the nitrogenous base thymine would be called a thymidine monophosphate.

Nucleotides are comprised of three components: a nitrogenous base, a pentose sugar, and one or more phosphate groups. Each of these elements is referred to as an "n" (nucleotide), so when we combine them all together, we get nucleotides like dATP and dTTP.

Thymidine is the name of the parent nucleotide from which derivative nucleotides are made. Thymidine monophosphate contains thymine and a phosphate group, which makes it different from other nucleotides. In this case, it has one phosphate group attached to its 5-carbon deoxyribose sugar, which is also called deoxyribonucleic acid (DNA).

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the emperical formula of the  hydrocarbons was CH

what is emperical formula?

The simplest whole number ratio of atoms contained in a substance is its empirical formula in chemistry. The empirical formula of sulphur monoxide, abbreviated SO, and disulfur dioxide, abbreviated S2O2, are two straightforward examples of this idea. As a result, the empirical formula for sulphur monoxide and disulfur dioxide, two compounds made of sulphur and oxygen, is the same. Their molecular formulae, which represent how many atoms are present in each molecule of a chemical compound, are different.

It's important to remember that you're dealing with a hydrocarbon in this situation, which is a chemical made up solely of carbon and hydrogen.

As you can see, the byproducts of this combustion reaction are carbon dioxide, CO2, and water, H2O.

As a result, all the carbon that was formerly a component of the hydrocarbon will now be a component of the carbon dioxide. Similar to how all of the hydrogen that originally made up the hydrocarbon is now a component of the water.

This means that you can calculate the initial amounts of carbon and hydrogen in the hydrocarbon by counting the moles of water and carbon dioxide, respectively.

So, for water you have

1.37g x 1mole H2o/18.015 =0.076moles H2o

and for carbon dioxide

5.86g x 1 mole CO2/44.01g=0.133 moles CO2

Now, you know that every mole of water contains 2 moles of hydrogen and 1 mole of oxygen, which means that the reaction produced

0.076moles H2O x 2 moles H1/mole H2O=0.152 moles H

SInce every mole of carbon dioxide contains 1 mole of carbon and 2 moles of oxygen, it follows that the reaction also produced

0.133moles CO2 x 1 mole C/1mole CO2=0.133 moles C

Finally, to find the mole ratio that exists between carbon and hydrogen in the hydrocarbon, divide these values by the smallest one

For C: 0.133moles/0.133moles=1

For H: 0.152moles0.133moles=1.14≈1

The empirical formula of the hydrocarbon will thus be

C1H1⇒CH

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the concentration of lithium hydroxide in molarity was 8M

what are the properties of lithium hydroxide?

A transparent to water-white liquid with a possible strong odour is what lithium hydroxide solution looks like. Skin, eyes, and mucous membranes may have very irritating contact reactions. Through consumption, inhalation, or skin absorption, it may be harmful. Other compounds are created using it.

Given,

weight =48 g

No. of moles  =2448=2 moles

volume =250mL

Molarity Volume (in L)No. of moles=0.25L2=8M

=8M

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Temperature remains the same as the amount of heat and the concentration remains the same..

When 100cm3 of 1.0 mol dm-3 hcl is mixed with 100 cm3 of 1.0 mol dm-3 of NaOH the temperature remains the same. Here, the volume of the solution gets half .mass and heat released reduced by half.so, temperature remains the same as the concentration of the solution does not change.concentration of the solution is the amount of solute present in the given solution.

So, the temperature remains the same as 5C.We know this from calculating heat exchange using specific heat capacities.This process explains when two or more substances at different temperature are brought together to the environment they eventually reach the same temperature.

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2.5 moles of chloride ions can be found in a solution made from 1.25 moles of magnesium chloride.

Magnesium Chloride is an remedy used to save you and deal with low amounts of magnesium inside over the counter blood. Magnesium is crucial for over the counter everyday functioning of cells, muscle mass, bones, nerves, and over-the-counter heart. This medicine is to be had as an injectable solution and isn't always covered over-the-counter aid of Medicare.

Eye may reason mild eye irritation and skin can also motive skin inflammation. Ingestion causes gastrointestinal inflammation with nausea, vomiting and diarrhea. Inhalation may also motive breathing tract inflammation.

Magnesium chloride is likewise safe for guys, ladies, children, and throughout pregnancy. over the counter magnesium chloride can also help over-the-counter body process and soak up some over the counter critical mineral, calcium. Magnesium has also been shown to contribute to a healthy coronary heart, ordinary blood stress degrees, strong bones.

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Alchemy was a form of speculative thought that, among other aims, tried to transform base metals such as lead or copper into silver or gold. It also sought to discover cures for diseases and a way of extending life.

Today we know that the universe is made up of atoms and elements. Since lead and other metals are not composed of fire, air, earth, and water, it's not possible to adjust the percentages of those elements and turn them into gold.

(Unfortunately, it turns out that alchemy, at least in its purest form, can’t be done. You can’t turn any metal into gold, no matter how much sorcery or chemicals or mystical charms you use. )

I hope I helped

The value of the maximum velocity for an enzyme-catalyzed reaction that follows Michalis Menton kinetics if the initial velocity is 6 mm/s at a substrate concentration of 6 mm.  the correct option is (C).

The km for the enzyme system is 2 mm is 8mm. The Michalis-Menten equation is commonly used to study the kinetics of reaction catalysis by enzymes as well as the kinetics of transport by transporters. Typically, the rate of reaction (or reaction velocity) is experimentally measured at several substrate concentration values.

A plot of the reaction rate versus the substrate concentration reveals two important kinetic parameters: Vmax and Km .

Vmax is the maximum reaction rate that is observed at saturating substrate concentrations.

Km is referred to as the Michalis constant and is the substrate concentration at which the reaction rate is exactly half of Vmax.

Km is inversely related to the apparent affinity of the enzyme/transporter for its substrate. Therefore, a low numerical value of Km refers to a very high affinity of interaction between the protein and its substrate.

The Michaelis-Menton equation can be written as -

V = Vmax [S] / (Km + [S])

V is the reaction velocity (rate of reaction progression per unit time)

Vmax is the maximum velocity of the reaction.

[S] is the substrate concentration.

Km is the Michaelis constant.

Here V = 6mm/s

Vmax =?

[S] = 6mm

Km = 2mm

putting into equation,

V = Vmax [S] / (Km + [S])

6 = Vmax [6] / (2 + [6])

6 = Vmax [6] / 8

48/6 = Vmax

Vmax = 8mm

The value of the maximum velocity for an enzyme-catalyzed reaction that follows Michaelis Menton kinetics is 8mm.

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The correct sequence of ideas that led to the current model of the atom is as follows:

1. Dalton developed the theory that all matter is made of atoms.  

2. Thomson discovered that atoms contain electrons.

3. Rutherford discovered that atoms have a nucleus.

4. Bohr developed the model in which electrons orbit the nucleus.

5. Schrödinger developed the electron cloud model of the atom.

An atom is the smallest unit of a chemical element that can take part in a chemical reaction.

The atomic theory of matter is the theory that all matter is composed of atoms.

Atoms are composed of electrons, protons, and neutrons.

Several scientists contributed ideas that led to the current model of the atom. These scientists include:

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Complete question:

Order the sequence of ideas that led to the current model of the atom. Place a number in front of each event to show the correct order.

Rutherford discovered that atoms have a nucleus.

Dalton developed the theory that all matter is made of atoms.

Schrödinger developed the electron cloud model of the atom.

Bohr developed the model in which electrons orbit the nucleus.

Thomson discovered that atoms contain electrons.

Future greater fires can be avoided by putting out ground fires, which are those that burn beneath the surface.

The correct answer is C

A ground fire is a particular kind of wildfire that starts underground when fuels like peat, coal, tree roots, or other buried organic debris catch fire and burn. Ground fires may end up burning through the ground's surface and turn into surface fires, depending on the circumstances of the fire.

Plant roots as well as other organic material ignited beneath the soil surface cause ground fires. Surface fires, which burn old or dried vegetation that is laying or growing slightly above the ground, might develop from these fires. On the contrary hand, crown fires consume the tree canopy.

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A confirmatory test for iron(iii) is Potassium Ferrocyanide.

The addition of potassium thiocyanate to Fe3+ produces a reddish-brown color due to the formation of this complex. The formation of the reddish-brown color confirms the presence of Fe3+.

The solution should be acidic for this test

A confirmatory test for nickel(ii) is dimethylglyoxime reagent (DMG).

Adding  2 or 3 drops of dimethylglyoxime reagent (DMG) to nickel(ii) will produce a rose-red precipitate of Ni(DMG)2 should form.

The solution should be basic for this test.

What is the confirmatory test for Fe3+?

Fe3+ forms a complex with thiocyanate, SCN−. The addition of potassium thiocyanate to Fe3+ produces a reddish-brown color due to the formation of this complex. The formation of the reddish-brown color confirms the presence of Fe3+.

What is the confirmatory test for Ni2+?

Add dimethylglyoxime(DMG) to the nickel ion solution. Next, add a little bit of ammonia to make the solution basic. It will give a red precipitate. This confirms the presence of Ni2+.

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Cr is the limiting reagent & the amount of Cr2N3 produced depends on the limiting reagent.

2 mol of Cr produces 146g of Cr2N3

1 mol ———————- 146/2g of Cr2N3

4.5 mol ——————- 146 x 4.5/2g of Cr2N3

=328.5g of Cr2N3

What is a Limiting Reagent?

Thus, 328.5 g of cr2n3 can be formed.

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At atmospheric pressure and 120 K, Xe is a liquid, whereas Ar is a gas at the same circumstances.

The right response is B.

Intermolecular forces can be divided into three categories: hydrogen bonds, dipole-dipole interactions, and London dispersion forces (LDF). Despite the fact that molecules can have any combination of these three types of intermolecular forces, all substances at least contain LDF.

These are the four principal intermolecular forces: Van der Waals dipole-dipole interactions > Ionic bonds > Hydrogen bonds > forces of Van der Waals dispersion.

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HI !!

Answer:

The empirical formula is CH2O

Explanation:

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The electronic configuration which have highest second ionization energy will be "1s22s22p63s2".

The energy needed to free the outermost, or lowest bound, an electron from an element's 1+ ion is known as the second ionization energy. The secondary ionization energy of an element would be usually greater than the first since a positive charge greater strongly attracts electrons than a negative charge.

The electronic configuration is 1s22s22p63s2.

It can remove 2 electrons to gain positive charge.

By removing 2 electrons, it attain +2 charge

In mass spectrometry, a variety of ionization techniques are employed. Electron impact (EI) as well as Fast Atom Bombardment are the two traditional techniques that most chemists were familiar with (FAB).

Therefore, the correct answer will be option (ii)

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The original concentration of the solution will be 2.1 × 10⁻³ m

Dilution factor is the ratio to dilute the stock solution. This can be expressed as the ratio of the volume of the final diluted solution to the initial volume removed from the stock solution.

Differs from dilution factor. Dilution ratio refers to a simple dilution ratio that combines a unit volume of solute with the desired volume of solvent. On the other hand, the dilution factor refers to the ratio between the volume of the initially concentrated solute and the volume of the final diluted solution. Which is DF = Vₙ / V₀

For the given question,

Vₙ = DF × V₀

Where, Vₙ = Final concentration of the serial dilution

V₀ = Original concentration of the solution

DF = Dilution factor

Since the solution is diluted 6 times then

Vₙ = 1/5⁶ × V₀

1.4x10⁻⁷ = V₀/15625

V₀ = 15625 × 1.4x10⁻⁷

V₀ = 2.1 × 10⁻³ m

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Concentration of unknown sample with an  absorbance of 0.32 at 542 nm is 2.22 × 10^-5 M.

What is Beer's law ?

Beer's Law is an equation that connects a material's characteristics to light attenuation. According to the law, a chemical's concentration and a solution's absorbance are exactly related. Using a colorimeter or spectrophotometer, the relation can be used to calculate the concentration of a chemical species in a solution. The UV-visible absorption spectroscopy is where the connection is most frequently applied. Be aware that at high solution concentrations, Beer's Law is invalid . Beer's law suggest that absorbance and concentration of a sample at a particular wavelength varies linearly. Now the best fit line equation for unknown sample is given as , y = 15200x - 0.018 where y is absorbance and x is concentration of sample . At an absorbance of 0.32 , put y = 0.32 in given equation we get the concentration .

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Iron bromide will form principate during the reaction.

When cations as well as anions in an aqueous solution combine to generate a precipitate, an insoluble solid, precipitation processes take place.

When target ion concentrations were identical, the ion that forms the poorest soluble compound would precipitate initially (at the lowest counter ion concentration), followed by the other ions as when the solubilities of respective compounds are attained.

When fe2(co3)3 reacts with mgbr2 then it will form iron bromide and magnesium carbonate.

Its chemical reaction can be written as:

[tex]Fe_{2}CO_{3} +MgBr_{2}[/tex] →[tex]FeBr_{3} +MgCO_{3}[/tex]

Here, magnesium carbonate will form ppt because it it will be a insoluble.

That's why it can be said that it will form ppt during the reaction.

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Yes as the temperature increases the solubility of NH3 will decrease and as we increase the pressure solubility of NH3  increases.

Solubility is defined as the maximum amount of substance that will dissolve in a given amount of solvent at a given or specified temperature. Based on solubility different types of solutions can be obtained. A saturated solution is a solution where a saturated solution is a solution where a given amount of solute is completely soluble in the solution.

Whereas a supersaturated solution are those where solute starts precipitating out after a certain concentration.

Temperature does effect the solubility of NH3 because as  the temperature increases the hydrogen bonding also decreases, due to which the NH3 molecules are no longer able to bind to water molecules hence their solubility decreases.

But as we increase the pressure on NH3 molecules the bonding with the water molecules will be higher and therefore the solubility also increases.

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Question 1. There are [tex]9.025*10^{23}[/tex] molecules in 270g of glucose.

Question 2. There are [tex]3.009*10^{23}[/tex] molecules in 40g of glucose.

Formula: [tex]C_{6} H_{12} O_{6}[/tex]

Using the molar mass of each element, which can be found in the periodic table, we make the following calculations:

Molar mass of C: 12.011 u

Total mass of C in compound: (12.011 * 6)= 72.066

Molar mass of H: 1.008 u

Total mass of H in compound: (1.008 * 12)= 12.096

Molar mass of O: 15.999 u

Total mass of O in compound: (15.999 * 6)= 95.994

Why did we multiply the molar mass of C, H and O by 6, 12, and 6? This is because the formula contains 6, 12, and 6 atoms of each element, respectively.

Add up all masses:

72.066 + 12.096 + 95.994= 180.156 g/mole

This result means that 1 mole of glucose has a mass of 180.156 grams.

Furthermore, 1 mole of any compound has a total of [tex]6.022*10^{23}[/tex] molecules. To find the amount of molecules, find the amount of moles and then the amount of molecules. Do it in the following fashion:

180.156g  -----> 1 mole

270g -----------> x

[tex]\frac{270*1}{180.156} =1.499[/tex]

270 grams of glucose is the equivalent of 1.499 moles of said compound.

Now, find the number of molecules using the amount of moles calculated previously.

180.156g ----> [tex]6.022*10^{23}[/tex]

270g ---------> x

[tex]\frac{(270*6.022*10^{23} )}{180.156} =9.025*10^{23}[/tex]

There are [tex]9.025*10^{23}[/tex] molecules in 270g of glucose.

[tex]NH_{4} NO_{3}[/tex]

N: 14.007 u

N: 14.007 u

O: (15.999 * 3)= 47.997 u

14.007 + 4.032 + 14.007 + 47.997= 80.043 g/mole

80.043g ----> [tex]6.022*10^{23}[/tex]

40g -----------> x

[tex]x=\frac{(40*6.022*10^{23}) }{80.043} =3.009*10^{23}[/tex]

There are [tex]3.009*10^{23}[/tex] molecules in 40g of glucose.

Answer:

There are two primary hair removal methods with electrolysis: galvanic and thermolytic. Galvanic hair removal chemically destroys the hair follicle. Thermolytic removal uses heat to destroy the follicle.

Explanation: