2CrO4 + 2H3O -> Cr2O7 + 3H2O

(yellow) (orange)

Unknown solution added until the sample turns yellow
which of these is he added solution?

CH3COOH

KNO3

NH4NO3

NaOH

There are two functional groups present in the structure below. These groups are arene and ether. The correct options are c and g.

An atom or group of atoms inside a molecule that share chemical characteristics when they appear in different compounds is referred to as a functional group.

Certain functional groups have a tendency to behave in a certain way, even though other components of the molecule are very different. Aromatic hydrocarbons include arenes. Originally, the word "aromatic" referred to their odors.

Therefore, the correct options are c, arene, and g, ether.

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The question is incomplete. Your most probably complete question is given below:

Pure elements has Gibbs free energy equal to 0.

The Gibbs free energy is a concept in chemistry specially of thermodynamics. The maximum amount of work that can be accomplished at a constant temperature and pressure by a closed system can be calculated using the Gibbs free energy (also known as Gibbs energy; symbol: denoted as delta G). Additionally, it offers a prerequisite for any processes like chemical reactions that might take place in such circumstances.

When a system achieves equilibrium without being pushed by an input electrolytic voltage, the Gibbs energy is the thermodynamic potential that is reduced. At the equilibrium point, its derivative w.r.t. the system's reaction coordinate vanishes.

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The α‑ketoacid or the α‑ carboxylic acid are the organic compounds that are the characterize the presence of a keto group at the position of α- in carboxylic acid functional group.

The common name of the α‑ketoacid resulting from the transamination of each amino acid is given as follows :

1) alanine + α‑ketoglutarate --->  pyruvate

2) aspartate + α‑ketoglutarate ----> oxaloacetate

3) glutamate + α‑ketoglutarate  ----->  α‑ketoglutarate

4) phenylalanine  + α‑ketoglutarate ------>   phenylpyruvate

5) tyrosine  + α‑ketoglutarate  ----->  p - hydroxyphenyl pyruvate

The amino acids are the organic compounds which contain both the groups the amino acid and the carboxylic acid groups.

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Answer:

K

Explanation:

Correct answer is :- (c) S (sulfur)

Oxygen (O) and sulfur (S) are chemically similar because sulfur is directly below oxygen in the periodic table. These elements have similar electron configuration. As a result, sulfur forms many compounds that are analogues of oxygen compound.

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The electron configuration for a neutral atom of titanium 1s² 2s² 2p6 3s²3p6 4s² 3d².

The distribution of electrons within an atom, molecule, or other physical structure in their respective orbitals is known as the electron configuration in atomic physics and quantum chemistry. As an illustration, the neon atom's electron configuration is 1s2 2s2 2p6, which means that 1, 2 and 6 electrons, respectively, are present in each of the subshells of the first two atoms.

According to electronic configurations, each electron moves on its own in an orbital within the collective average field that all other orbitals form. Slater determinants, also known as configuration state functions, mathematically define configurations.

For systems with a single electron, each electron configuration has a particular amount of energy, and under specific circumstances, electrons are able to switch between these configurations, according to the laws of quantum mechanics.

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There are so many types of chemical reaction reaction like combination reaction, double displacement reaction, nucleophilic substitution reaction etc. Therefore, the product formed is 2-ethyl-butan-2-ol and 3 methyl- pentan-2-ol respectively.

One nucleophile substitutes another in a family of organic reactions known as nucleophilic substitution reactions.

SN1 is a nucleophilic substitution reaction. Leaving group, a nucleophile, electrophile and a solvent are present. Two types of enantiomers can be formed in the reaction depending on the preference of the nucleophile. The first step is the slowest because a bond is being broken to form carbocation. The product is 2-ethyl-butan-2-ol. If attack is via SN2 then the product formed is 3 methyl- pentan-2-ol.

Therefore, the product formed is  2-ethyl-butan-2-ol and 3 methyl- pentan-2-ol respectively.

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All solutions have freezing points that are lower than those of pure solvents and that are inversely related to the molality of the solute.

A solute's freezing point is completely based on its concentration, not on its mass or chemical composition. A typical instance of freezing point depression is when salt reduces the freezing point of water in cold weather.

Frost point When solute molecules are added to a solvent, a colliding phenomenon known as depression results.

As a result, the freezing temperatures of all solutions are lower than those of pure solvents and are inversely related to the solute's molality.

study the freezing point.

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The basic formula says: Speed= Distance/Time . From this formula, it is evident that speed is directly proportional to distance and inversely proportional to time.

What is speed?

In everyday use and kinematics, the velocity of an object (commonly denoted by v) is the rate of change of position over time, or the rate of change of position per unit time. Therefore it is a scalar quantity. Average velocity of an object within a time interval is the distance traveled by the object divided by the duration of the interval Instantaneous velocity is the limit of average velocity when the duration of the time interval approaches zero. Velocity is not the same as speed.

The basic formula says: Speed= Distance/Time . From this formula, it is evident that speed is directly proportional to distance and inversely proportional to time.

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Its structure is linear for propane. The final carbon atom is joined to the functional group OH. Isomers are variations of compounds that share the same chemical formula but have various atomic configurations. The image of propan 1 ol and propan 2 ol is attached below.

A primary alcohol having the chemical formula CH3CH2CH2OH, propan-1-ol is also known as prOH or n-PrOH. It is an isomer of 2-propanol and a colourless liquid.

Acrolein, commonly referred to as propenal or acrylic aldehyde, is a member of the enals class of chemical compounds. These have the typical chemical formula RC=C-CH=O and are alpha, beta unsaturated aldehydes, where the aldehydic C=O function is conjugated to the C=C double bond at the alpha beta position.

Thus, Its structure is linear for propane. The final carbon atom is joined to the functional group OH. Isomers are variations of compounds that share the same chemical formula but have various atomic configurations.

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After solving the equation the pH of a 0.233m solution of anilinium chloride is 2.64.

What is ph of solution?
A solution's acidity is determined by its hydrogen ion concentration, which is measured by its pH. Pure water slightly splits into hydrogen and hydroxyl (OH) ions with equal proportions.

Aniline hydrochloride is conjugate acid of aniline. For calculation of pH we have to find pKa of C6H5NH2HCl and it behaves as a weak acid.

pKa+pKb= pKw

Kb= 4.6×10⁻¹⁰

pKa=14-(-log4.6ₓ10⁻¹⁰)

=4.66

pH=1/2pKa-1/2logc(c=0.233)

=4.66/2+0.63/2(logc= -0.63)

pH= 2.64

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The ph of a 0.233 m solution of anilinium chloride is 2.64

What purposes does aniline hydrochloride serve?

A powdery, crystalline (sand-like) green or white substance is aniline hydrochloride. It is employed in printing, dyeing, and the synthesis of other compounds.

In order to create polyaniline-coated poly(styrene-co-styrene sulfonate) nanoparticles, aniline hydrochloride was utilized. In the rat spleen and in response to aniline exposure, base excision repair (BER) mediated by 8-oxoguanine glycosylase 1 and Nei-like DNA glycosylases (NEIL1/2) was studied. It is a component of paints, paint removers, and clothes marking inks. Additionally, it is utilized as a shoe and stove polisher.

Commercially, aniline is made by either ammonia reacting with chlorobenzene or catalyzing the hydrogenation of nitrobenzene. Iron borings dissolved in aqueous acid are another method for reducing nitrobenzene

pKa+pKb= pKw

Kb= 4.6×10⁻¹⁰

pKa=14-(-log4.6ₓ10⁻¹⁰)

=4.66

pH=1/2pKa-1/2logc(c=0.233)

=4.66/2+0.63/2(logc= -0.63)

pH= 2.64

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The Compounds A, B, and C are ionic compounds because they are solid at room temperature. Therefore, option B is correct.

A chemical compound known as an ionic compound is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.

Ionic chemicals are brittle and rigid. When an ionic chemical is dissolved in water, it separates into ions. Ionic compound solutions and melting forms of these substances carry electricity, while solid materials do not. The chemical formula of an ionic compound is metal + nonmetal or polyatomic ions.

Thus, option B is correct.

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Here is a Lewis structure for the ether [tex]C_2H_5OC_2H_5[/tex]:

C

|

H-C-H

|

O-C-H

|

H-C-H

|

H

Each carbon atom has four valence electrons and each hydrogen atom has one valence electron. The oxygen atom has six valence electrons. In the Lewis structure, the valence electrons are represented as dots and the chemical bonds between atoms are represented as lines. The Lewis structure shows that there are two C-H bonds and one C-O bond in the ether molecule.

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The three steps of enzymes are catalyzed. The primary steps of an enzyme-catalyzed response are: substrate and enzyme combine, forming an E-S complex.

The response then occurs, changing the substrate into merchandise and forming an enzyme merchandise complicated. The merchandise then go away the energetic site of the enzyme. The first step of an enzyme catalyzed response is catalytic turnover the binding of substrate via way of means of the enzyme the discharge of product dissociation of the ES complicated ES -> E + P. An enzyme-catalyzed response may be more or less divided into 3 stages: enzyme-substrate binding, "catalysis" and product release.

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This expression also referred as boiling hot was used early as the late Middle Ages to describe the steam that fired out of a keeps spouting tea kettle, a device that had been in use since ancient Mesopotamia.

Boiling is the rapid evaporation of a liquid that occurs when it is heated to its boiling point, which is the temperature at which the liquid's vapour pressure equals the pressure exerted on the fluid by the outer air.

Evaporation is an a kind of vaporization that takes place on the surface of a fluid as it transitions from the liquid phase to the gas phase. When humidity affects the rate of evaporation of water, a high concentration of the dissipating substance in the gas or vapor significantly slows down evaporation.

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For a chemical reaction in a closed system, mass cannot be (created) or  (destroyed). We can say that throughout the reaction mass is (conversed). Hence, the answer is: D. created; destroyed; conserved.

In chemistry, the law of conversation states that in an isolated system, certain physical property does not change over time. For example, if two reactants react and produce gas, this system's total mass remains the same as the initial mass. Hence, the mass cannot be created or destroyed. It also applies to energy. It cannot be created or destroyed, but just changed from one form of energy to the other.

This question seems incomplete. The complete query is as follows:

“For a chemical reaction in a closed system, mass cannot be ______________ or _______________. We can say that throughout the reaction mass is _____________.

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To arrange the four compounds according to lambda max, you will need to know the lambda max values for each compound. Lambda max is the wavelength at which a compound absorbs the most light, and is a measure of the compound's color.

Here is the list of compounds (as an example), arranged in decreasing order of lambda max:

Without knowing the specific lambda max values for the four compounds, it is not possible to accurately arrange them according to lambda max.

Since the question was not complete and nowhere to be found, the answer is general. However, the solution is given with an example to make it simpler for you to solve.

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The molarity of sugar if its 20g are dissolved in water to make volume up to 2L is calculated as 342 g/mol.

A unit of concentration expressed as the number of moles of dissolved solute per liter of solution is called molarity. If number of moles and the volume are divided by 1000, then molarity is expressed as number of millimoles per milliliter of solution.

Molarity is the moles of a solute per liters of a solution and Molarity is also called the molar concentration of a solution.

As we know, Molarity=  Mass / (Molar mass × Volume)

Hence, the concentration of sugar;

= 20/342×2

=0.029mol/L.

Now, molar mass of sugar =342 g/mol.

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Answer:

Explanation:

An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton).

The major product of the given reaction will be Hoffmann product as shown in the attached diagram.

Hofmann elimination can be described as an elimination reaction of an amine to generate alkenes. The least stable alkene called the Hofmann product is formed from the Hofmann alkene synthesis rule. This rule contrast with usual elimination reactions, where Zaitsev's rule gives the formation of the most stable alkene.

The Hofmann product is preferentially formed because of the steric bulk of the leaving group causing the hydroxide to abstract easily accessible hydrogen.

In the Hofmann elimination, the least substituted alkene is favored due to intramolecular steric interactions. The formation of the Zaitsev product is energetically less favorable than the conformation needed for the formation of the Hofmann product.

Therefore, the Hofmann product is preferentially formed. In the given reaction less substituted alkene will be formed.

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This is because the Van't Hoff factor for NaCl is 2 while it is 1 for glucose.

What is freezing point?

When a liquid's temperature falls below its freezing point, it transforms into a solid. According to the internationally accepted definition, freezing refers to the solidification phase change of a liquid or the liquid content of a substance, which occurs most commonly as a result of cooling.

The melting and freezing points of most substances are the same temperature; however, some substances have different solid-liquid transition temperatures. Agar, for example, has a hysteresis in its melting and freezing points. It melts at 85°C (185°F) and solidifies at temperatures ranging from 32°C to 40°C (89.6°F to 104°F).

Hence, this is because the Van't Hoff factor for NaCl is 2 while it is 1 for glucose.

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Some of the carbon neutral examples are Planting trees, Capturing and storing carbon dioxide emissions, Using renewable energy, Purchasing carbon credits, Driving an electric or fuel cell vehicle.

Carbon neutrality refers to achieving net zero carbon dioxide emissions by balancing a measured amount of carbon dioxide emissions with an equivalent amount of carbon dioxide removal or sequestration. Here are some examples of actions or activities that can contribute to carbon neutrality:

Planting trees or other vegetation, which absorb carbon dioxide from the atmosphere as they grow

Capturing and storing carbon dioxide emissions from power plants or other industrial sources

Using renewable energy sources like solar or wind power, which do not emit carbon dioxide during electricity generation

Offsetting emissions by purchasing carbon credits, which represent a reduction or removal of carbon dioxide emissions from the atmosphere

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To solve this, we need to have clear concept about  electron rich and electron poor groups. Therefore, electron rich groups are option B,C,F. Electron poor groups are option C,E.

It is electron-rich if the core atom contains more than 8 electrons. SO[tex]_2[/tex] is one such example. Sulphur is connected to a total of ten electrons. There are four bond pairings and one lone pair. These serve as effective Lewis bases.

The core atom is considered to be electron accurate if it has exactly 8 electrons; H[tex]_2[/tex]O and NH[tex]_3[/tex] are examples. Depending on whether or not they have lone pairs of electrons, such molecules may or may not behave as Lewis bases.

Therefore, electron rich groups are option B,C,F. Electron poor groups are option C,E.

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In order to heat a round bottom flask in a heating mantle, plug the heating mantle into a variac or powermite.

A chemical process which typically involves the transformation or rearrangement of the atomic, ionic or molecular structure of an element through the breakdown and formation of chemical bonds to produce a new compound or substance is known as a chemical reaction.

In order to heat a round bottom flask in a heating mantle we have to plug the heating mantle into a Variac or Powermite which is typically used for controlling the temperature level. Turn the heat up gradually, and do not exceed 50-60% of the maximum output of the device, it advised to do so to avoid any electrical issues such as overloading, short-circuit etc.

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Chocolate can stiffen or seize up easily. It happens when you overheat and burn it as well as when you allow the chocolate to come into contact with a small amount of moisture, which is why keeping chocolate dry is always advised.

It will no longer have the rich, glossy sheen that characterizes its melted form and instead will appear drab, muddy, and have a thick, sluggish texture. And the harder it will be to save, the longer it cooks at high temperatures.

You must discard it and start over if it tastes burnt. If it tastes nice, pour it into a fresh bowl that has been chilled and cool it down by stirring in some freshly chopped chocolate.

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The more number of atoms in 1.0 g of the Na and the 1.0 g of the Mg is the 1.0 g of Na has more number of the atoms.

The number of moles is given :

number of moles = mass / molar mass

atomic mass of the Na = 23 g/mol
atomic mass of the Mg = 24 g/mol

number of moles = 1 / 23 mol

number of moles = 1 / 24 mol

number of atoms in 1 g of Na = (6.023 × 10²³) / 23 atoms

                                                = 2.618 × 10²² atoms

number of atoms in 1 g of Mg =  (6.023 × 10²³) / 24 atoms

                                                 = 2.509 × 10²² atoms

Thus, 1 g of the Na has more number of atoms.

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In addition to exposing groups to weather transition risks, Scope 3 emissions can doubtlessly enhance prices inside a firm's fee chain, undermining profitability and, ultimately, marketplace performance.

Scope 3 emissions are among the finest quantity of emissions that groups produce indirectly, so it is going to be vital for manufacturers to attain their sustainability goals, with the blessings to wider society of a greener enterprise environment. These also are oblique emissions – which means the ones now no longer produced with the aid of using the organization itself – however they fluctuate from Scope 2 as they cowl the ones produced with the aid of using clients the use of the organization's merchandise or the ones produced with the aid of using providers making merchandise that the organization uses.

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A side chain of aspartate next to a side chain of glutamate inside a hydrophobic pocket.

Hydrophobic substances are composed of non-polar molecules that repel bodies of water and attract other neutral molecules and non-polar solvents. Examples of these molecules are alkanes, oils and fats in general.

These two properties of water, namely its polarity and its ability to form strong hydrogen bonds with other polar molecules is what leads to the hydrophobic interactions. Due to the polarity of water, water can dissolve other polar molecules because it can readily form hydrogen bonds with them

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Answer: ur mom

Explanation:

u don’t know she could be hot

The compounds in below image categorized as meso or non-meso species.

A meso compound or meso isomer is one of a group of stereoisomers, at least two of which are optically active, but not the others. This indicates that the molecule is not chiral even though it has two or more stereocenters. The mirror image of a meso compound can be "superposed" on it.

A molecule with many identical stereocenters and an identical or superimposable mirror image is referred to as a meso complex. Enantiomers: Non-superimposable mirror copies of one another, enantiomers are optical isomers.

Thus, The compounds in below image categorized as meso or non-meso species.

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