you are asked to spike a new l bag of lrs with 20mls kcl (2meq/ml). what is the total kcl concentration of the liter bag of lrs?

tert−Butyl iodide or tert−Butyl chloride, tert−Butyl iodide reacts at the faster rate.

Unimolecular nucleophilic substitution process is equivalent to the SN1 reaction.Reactions occur in a single order.An illustration of an SN1 reaction is the hydrolysis or tert-butyl bromide in an aqueous NaOH solution.

Two of the most frequent chemical reactions in organic chemistry are SN1 and SN2.SN1 is a substitution-nucleophilic addition reaction that frequently involves both benzene and carbonyl compounds.Another kind of nucleophilic substitution known as an SN2 is more frequently seen with alkyl halides and benzoins.

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According to the statement, this implies that the number of neutrons is equal to the number of protons. Correct answer: letter A.

This is because the N/Z ratio (Neutron/Proton ratio) is equal to 1.

Stable isotopes are atoms that have the same number of protons and neutrons in their nucleus. This means that the N/Z ratio of these atoms is 1, which implies that the number of neutrons is equal to the number of protons. Stable isotopes are essential for many scientific and technological applications such as research in:

Stable isotopes are typically found in elements with low atomic numbers. This is due to the fact that low atomic numbers indicate a low number of protons, which in turn implies fewer neutrons are needed to achieve the N/Z ratio of 1. This is why elements such as hydrogen, helium, and lithium are typically found to have more stable isotopes than other elements.

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As increasingly solute is dissolved withinside the solvent, the concentration of the solution is going on increasing.

The osmotic pressure can be expressed as follows:

π=iCRT

With the growth in concentration of the solution, the osmotic stress of the answer increases. Thus, the osmotic stress of answer is extra than the natural solvent. As the concentration of solute is extra in an answer than in natural water, water from natural water attempts to diffuse or go through osmosis to the solution. Hence, the strain required to save you water access to the solution, i.e. osmotic strain of an answer is usually better than that of natural water or solvent.

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the energy of a photon that is emitted as a hydrogen atom makes a transition between the n is 13.6(n^2 - 1)/n^2 eV

From the hydrogen atom's first excited state to its ground state, an electron transitions.

the given part is

   n1 = 1  and   n2 = n

The energy of photon released,

E=13.6(1/n1^2 – 1/n2^2) eV

= 13.6(1/1^2 – 1/n^2) eV

= 13.6(n^2 - 1)/n^2 eV

The following hypotheses form the foundation of Bohr's model:

• He hypothesized that an atom's electron can move within a specified stable, circular orbits around the nucleus without producing radiation.

• Bohr discovered that the electron's angular momentum is quantized in size.

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The flaw in Regina’s plan is that the time frame is unrealistic (option B).

Goal setting involves the development of an action plan designed in order to motivate and guide a person or group toward a goal, which is a result that one is attempting to achieve.

Effective goal setting lets you measure progress, overcome procrastination and visualize your dreams. However, setting goals is said to be effective when it is done in an adequate time frame.

According to this question, Regina identifies her goal and hastily writes it down as follows: I will make an A on my English literature term paper that is due next week.

This goal, although is great, is unlikely to be met because of the time frame. One cannot get an excellent result in something that lacks adequate preparation, which includes adequate time.

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Time taken to deposit 0.00235 moles of gold by the electrolysis of kaucl4(aq) using a current of 0.214 amperes is  53.0 min

Note that the oxidation number of gold is +3 in the aqueous solution given. We can then determine how many moles of e- are needed.

The most common oxidation states of gold are +1 and +3. This implies it gives either 1 or 3 electrons to form stable mixtures. For instance, in AuCl3 , chloride particles have a - 1 oxidation state so gold will have Au + 3(- 1) = 0, so gold will have a +3 oxidation state.

The oxidation number or oxidation state of any atom is the capacity of that atom to gain or lose electrons. The oxidation state is the charge on an atom when it is in its ionic form, or when in a molecule. The charge is negative when an atom tends to take electrons or the atom is more electronegative, while the charge is positive when an atom has a capacity to give electrons.

As the oxidation state is determined as particles, so the oxidation state of any neutral molecule is zero. So any molecule without a charge has a 0 oxidation number. Then by adding the individual oxidation numbers we can take out the oxidation number of any component to be positive or negative.

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Bromine reacts with 2-butene to form 2,3-dibromobutane. It also reacts with 3-methyl-2-pentene to form 2,3-dibromopentane.

We can build a general rule that bromine reacts with compounds that contain a C=C double bond to give the product expected from addition across the double bond. This approach to understanding the chemistry of organic compounds presumes that certain atoms or groups of atoms known as functional groups give these compounds their characteristic properties.

Functional groups focus attention on the important aspects of the structure of a molecule. We don't have to worry about the differences between the structures of 1-butene and 2-methyl-2-hexene, for example, when these compounds react with hydrogen bromide. We can focus on the fact that both compounds are alkenes that add HBr across the C=C double bond in the direction predicted by Markovnikov's rule.

Bromine, is a chemical element in the periodic table that has the symbol Br and atomic number 35. A halogen element, bromine is a red volatile liquid at standard room temperature which has a reactivity between chlorine and iodine. This element is corrosive to human tissue in a liquid state and its vapors irritate eyes and throat. Bromine vapors are very toxic upon inhalation.

A halogen, bromine resembles chlorine chemically but is less active. It is more active than iodine, however. Bromine is slightly soluble in water, and highly soluble in carbon disulfide, aliphatic alcohols (such as methanol), and acetic acid. It bonds easily with many elements and has a strong bleaching action.

Bromine is highly reactive and is a powerful oxidizing agent in the presence of water. It reacts vigorously with amines, alkenes and phenols as well as aliphatic and aromatic hydrocarbons, ketones and acids (these are brominated by either addition or substitution reactions). With many of the metals and elements, anhydrous bromine is less reactive than wet bromine; however, dry bromine reacts vigorously with aluminium, titanium, mercury as well as alkaline earth metals and alkaline metals.

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It is diprotic because it contains two ionizing H atoms. The balanced equation is HSO3- ==> H + SO3-,

However, I believe the question is only requesting the first one to demonstrate that it produces H3O+. H2SO3 plus H2O equals H3O+ plus HSO4 in the net ionic equation. -

Diprotic acids include two acidic hydrogen atoms and include sulfuric acid (H2SO4), carbonic acid (H2CO3), hydrogen sulfide (H2S), chromic acid (H2CrO4), and oxalic acid (H2C2O4).

In an aqueous solution, a diprotic acid is an acid that has the capacity to contribute two hydrogen ions (H+) or protons per molecule. A dibasic acid is another term for a diprotic acid. A polyprotic acid, or an acid with the capacity to contribute more than one proton per molecule, is a form of diprotic acid.

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The calcium chloride concentration to be thrown on the concrete should not exceed 2%.

Calcium chloride solution is a compound that is used to remove the eyes from the dry base during the winter season in the cold are region of the world.

Calcium chloride releases heat when spread over the ice. This released heat melts the ice.

Calcium chloride has a much lower melting point than that of the ice, it release 3 ions when it dissociates on the surface of the ice. This allows the eyes to melt.

But the concentration of the calcium chloride solution that has to be added to the concrete should not exceed 2% because further concentration may harm the quality of the concrete which is not a good thing.

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Answer:

group

Explanation:

The volume of a rectangular box with length of 25.0 cm width of 7.0 cm and height of 3.5 cm is 612.5 cm³

Volume is a measure of the occupied three-dimensional by its  space. It is often used to quantified numerically me know using SI derived from the center units or by the way various imperial or US customary units. The speed of definition of length is interrelated with the volume.

The volume of cuboid can be calculated by multiplying the width and length and height all together

Here,

Length = 25 cm

Width = 7 cm

height = 3.5 cm

So volume of the box is:

= 25×7×3.5

= 612.5 cm³

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When an element from group 2 bonds with an element from group 17 an ionic bond is formed, due to electronegativity difference.

Chemical Bonding generally refers to the formation of a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound. These chemical bonds are what keep the atoms together in the resulting compound.

Ionic bond, also called as the electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence that is  the outermost electrons of one atom are transferred permanently to another atom.

In the above given case when element from group 2 reacts with the element of group 17, it will form a ionic bond due to the huge electronegativity difference.

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A replacement reaction is one wherein a set of atoms is replaced by another atom in a molecule. In the given reactions is 2Na + Cl₂ → 2NaCl is not a replacement reaction.

A displacement reaction also known as a replacement reaction can be defined as one wherein an atom is displaced by another atom in a molecule. For example, when iron (Fe) is added to a solution of copper sulfate (CuSO₄), it displaces the copper (Cu) metal.

A single replacement reaction can be described as a kind of redox reaction when an element moves out of a compound, one element is replaced by the other in its own compound.

[tex]A +BC\longrightarrow AB +C[/tex]

Double replacement reactions take place mostly in aqueous solutions wherein the ions precipitate and the exchange of ions occurs. The double replacement reaction can be represented as:

[tex]AB +CD\longrightarrow AC +BD[/tex]

Therefore, option (D) is correct.

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Answer:500g

Explanation: 500g

Explination: no chocolete was lost in the chopping of chocolate so it remains 500g

If the bond angle between two adjacent hybrid orbitals is 109.5° , the hybridization is sp³ .

When s orbitals combines with three p orbitals (px, py and pz)  four sp³ hybrid orbitals with similar characteristics are formed. These hybrid orbitals have a bond angle of 109.5° between them, which causes the minimum electronic repulsion between them.

An atom in which all the atoms that are bonded to it contains single bonds is an  sp³ hybridized atom. For example-alkanes.

For, sp³ hybridized central atoms, the molecular geometry is a tetrahedron. But, if the geometry is distorted due to lone pairs then trigonal pyramidal or bent geometry is formed.

Thus, option "c" is correct.

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Thickening the material involved is a way in which the rate of thermal energy transfer into the pie can be maximized.

This is referred to as the degree of hotness or coldness of a substance and it is influenced by thermal energy. It is usually measured with the use of a thermometer and the S.I unit of this type of measurement is Kelvin.

The way in which the rate of thermal energy transfer can be maximized is by thickening the material as it will ensure that the atoms are tightly packed together which permits the flow of electrons or heat between them in this scenario.

The arrangement of the atoms ensures that the thermal energy is easily absorbed and also has a relative high specific heat capacity thereby making it the correct choice.

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The effect of intermolecular attraction on the properties of gas becomes more significant.

A gas is a substance that has no constant size or form. Whilst inside a closed container, gasoline will amplify to fill the field. An instance of gas is the air you breathe. The gas interior of your digestive tract is fabricated from the air and different gases.

Traits of Gases :

* Gases have neither definite shape nor particular volume. They expand to the dimensions of their container.

* Gases are fluid and go with the flow effortlessly.

* Gases have low density, except compressed.

* Gases diffuse (mix and unfold out) and effuse (tour thru small holes).

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Wooden products like plywood and table boards contain formaldehyde.

Formaldehyde is the first member of the aldehyde family of alkane.

It contains a double bond between the carbon and the oxygen atom and forming one single bond with each of the two hydrogen atoms.

Formaldehyde is a naturally occurring chemical which can be found in the wooden products like plywood and table boards that are used on the daily basis in our homes.

Apart from this, the Paints, cosmetics and some synthetic fibers also contains formaldehyde.

Formaldehyde is also a very crucial part of the formation of many polyesters.

So, it can also be found in polyester based products.

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The concentration of a solution formed by diluting 25.0 ml of a 3.2 m nacl solution to 135.0 ml is 0.60 mol

M1V1=M2V2

M2=M1V1/V2

M2= 3.2×25.0 ÷ 135.0

M2=0.60 mol.

The term "concentration" in chemistry refers to the elements that make up a mixture or solution. Here's how concentration is defined and how it can be calculated using various techniques. Concentration in chemistry refers to the quantity of a substance in a given area. The ratio of the solute in a solution to the solvent or total solution is another way to define concentration. In order to express concentration, mass per unit volume is typically used. The solute concentration can, however, also be expressed in moles or volumetric units. Concentration may be expressed as per unit mass rather than volume. Although concentration is typically used to describe chemical solutions, it can be calculated for any mixture. Concentration Examples in Units: g/cm3, kg/l, M, m, N, and kg/L

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The reaction is exothermic in this Hydrogen, when combined with oxygen in a chemical reaction, forms water.

The response among hydrogen and oxygen is exothermic- it releases power to the surroundings: hydrogen + oxygen → water 2H2 + O2 → 2H2O Fuel cells use the response among a gasoline and oxygen to provide electric energy. Hydrogen is flamable and it burns with a popping sound in oxygen with an nearly colourless flame to shape water molecules and launch heat.

This response is noticeably exothermic. Formation of water from hydrogen and oxygen is a aggregate response due to the fact hydrogen and oxygen are combining to shape unmarried product. The response takes place as follows: 2H2(g)+O2(g)→2H2O(l). The response of hydrogen with oxygen to shape water is an exothermic response.

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The potential of a cell Eocell = Eored − Eooxid

Any electrochemical cell must have two half-cells in order to be functional. Without actually building the cell, the processes that will take place and the standard potential of a cell for any pair of two half-cells can be predicted using the table below. According to the table, reduction will take place inside the cell on the half-cell with the highest reduction potential. The cell will oxidise the half-cell with the smaller reduction potential. The entire cell potential will be a positive value if those conditions are met. For a cell to spontaneously undergo a redox reaction in the opposite direction, the cell potential must be positive.

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in the lewis resonance structure for ammonium ion (nh4 ) in which the central n atom is singly bonded to each of the four h atoms on the n atom positive charge is present.

Ammonia is a colorless, intensely unpleasant gas with a pungent, choke-inducing smell. It readily dissolves in water to produce an ammonium hydroxide solution that can irritate the skin and burn. Ammonia gas is easily compressed and, when put under pressure, turns into a clear, colorless liquid.

The ammonia has normally three hydrogen attached to central nitrogen atom carrying lone pair. When fourth hydrogen attaches to the central atom positive charge appear on the central atom.

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Answer:

D

Explanation:

The answer to question 4) is 5.79×10^22

The statement strengthens the argument for solar energy :

- The cost of solar energy continues to decline as production increases.

- Solar energy is abundant renewable resource and can be produced locally in remote areas.

- Solar energy has a high energy yield and can be used almost anywhere including rooftops.

Solar energy can be described as radiant light and heat from the Sun that is used by technologies such as solar power to generate electricity, solar thermal energy, and solar architecture. Solar energy is an essential source of renewable energy, and its technologies can be characterized as passive or active depending on how they capture and distribute solar energy.

In the given question the statement weakens the argument for solar energy Solar panels takes up a lot of space compared to other energy sources. The initial cost of the solar system is still relatively high.

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Two of the samples could be combined and their melting points compared to demonstrate the presence of distinct materials in the test tubes. The two substances are distinct if the melting point is lower than the theoretical melting point. They are the same substance if the melting point of the sample doesn't change.

The melting point is a solid's physical characteristic that can be used to identify a substance. In reality, a solid typically melts over a wide temperature range rather than at a single, set temperature. Because of this, speaking of a melting point range is more useful.

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Basic amino acids are Arginine, Polar amino acids are Glutamine and non polar amino acids are Alanine.

Arginine is an essential amino acid that has a positively charged guanidine group. Arginine is well designed to bind the phosphate anion, and is often found in the active centers of proteins that bind phosphorylated substrates.  Glutamine is a polar amino acid. It thus most prefers to substitute for other polar residues, in particular Glutamate, which differs only in that it contains an oxygen in place of the amino group in Glutamine. It can also substitute with other polar amino acids. Alanine is an neutral non polar amino acid that is used to make proteins. It is used to break down tryptophan and vitamin B-6. It is a source of energy for muscles and the central nervous system. It strengthens the immune system and helps the body use sugars.

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When 100 grams of water and 50 grammes of potassium chloride are dissolved at 50 C, the solution can be appropriately referred to as supersaturated. If more solute is added, supersaturated solutions result.

The saturated solution To put it another way, it is the situation in a saturated solution when you add some extra solute to the solution. The prepared solution will reach saturation when it crosses the line of saturation if it is cooled. It will be supersaturated if it is previously cooled, along the saturation line to point B. This solution is oversaturated, but that does not mean it will immediately crystallize. The term "metastable" refers to supersaturated solutions.

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Answer:

No

Explanation:

It is not a serious condition because people who have it don't face any life threatening, or even health threatening symptoms. The only bad symptoms that a person can have are diarrhea, gas, or bloating, which are all pretty uncomfortable, but aren't serious things.

-Hope this helped & Happy Holidays!

Alanine, arginine, glutamine, and histidine are all amino acids, but they are classified differently based on their side chains.

Thus, alanine is neutral nonpolar, arginine is basic, glutamine is neutral polar, and histidine is acidic.

Since the task isn't complete, here's the full question:

Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar.

Drag each item to the appropriate bin.

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