treated with one equivalent of N-Bromosuccinimide in The following alkene is bromination product(s) dichloromethane in the presence of light to give pts pts 2 pts line-angle formula for cach product - formed Draw 2 pts 2pts Visited do not have t0 consider stereochemistry: Draw organic products only: Draw one structure per sketcher: Add additional sketchers using the drop-down menu in the bottom right corner: Separate multiple products using the sign from the drop down menu Pravious

The decreasing order of the strength of the intermolecular forces of the molecule is:

Hydrogen bonding>dipole-dipole forces>london-dispersion forces

What are intermolecular forces?

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The ‘standard enthalpy of formation’ is the energy that is evolved or absorbed when one mole of the substances if formed from its constituents under standard conditions.

We have to assume that when we form a compound that the compound would have to be formed from the elements that compose the compound and that the elements that are combining to form the compound would have to be the elements that are in the standard states.

We can see from the reaction that has been written here that the carbon, the oxygen and the hydrogen that need to be combined so as to give us the glucose molecule would have to be in the standard state and such they can be seen here to be depicted as the elemental compounds in the reaction shown.

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For each Lewis acid-base reaction, identify the base and the acid. Decide which reactant is an electron-pair donor and which reactant is an electron-deficient in each equation. Lewis acid is the substance with an electron deficit, while Lewis base is the other.

Small, compact, and polarizable describe hard acids and bases. Larger and more evenly distributed in size are soft acids and bases. In addition to their inherent strength, hard acids and soft acids react differently with different types of bases.

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N2O and SF4 are molecular compounds, while Na2O and CaCl2 are ionic compounds.

This is because molecular compounds are composed of non-metals, while ionic compounds are composed of a metal and a non-metal.

Molecular compounds are compounds composed of molecules held together by chemical bonds. They are formed when two or more non-metals combine and form a covalent bond.

Ionic compounds are compounds composed of ions held together by electrostatic forces. They are formed when a metal and a non-metal combine and form an ionic bond.

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The product formed from 3-methypentanone and NH₂NH₂ in the presence of KOH and heat is 3-methylpentane. Hence, the correct option is A.

3-Methylpentane is defined as a branched alkane with the molecular formula C₆H₁₄. 3-Methylpentane is a structural isomer of hexane which is composed of a methyl group bonded to the third carbon atom in a pentane chain.

2-Methylpentane and 3-Methylpentane are position isomers because these are the chain isomers of hexane, position isomers are those isomers which are formed when any specific functional group is attached.

Hence, the reaction of 3-methypentanone and NH₂NH₂ in the presence of KOH and heat produces 3-methylpentane.

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Galvanic cell is a device that converts chemical energy into electrical energy.

An electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy is known as a galvanic cell or a voltaic cell. Galvanic cell Voltaic cell is an electrochemical cell that makes use of chemical reactions to generate electrical energy.

A galvanic cell consists of two half-cells, such that the electrode of one half-cell is composed of the metal A, and the electrode of the other half-cell is composed of metal B; the redox reactions for the two separate half-cells.

Galvanic cells harness the electrical energy available from the electron transfer in a redox reaction to perform useful electrical work. The key to gathering the electron flow is to separate the oxidation and reduction half-reactions, connecting them by a wire, so that the electrons must flow through that wire

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We need to know how many valence electrons are present in a given molecule in order to determine its Lewis dot structure.

Lewis dot structure is defined as the visual representation of atoms' electrons using a diagram. It describe the bonds that exist between a molecule's lone pairs of electrons and its atoms.

A lone pair of electrons on the atom with the formal charge of 1- can typically be converted into a bonding pair that is shared with the atom that has the formal charge of 1+ in order to reduce the formal charges when they are present.

Thus, we need to know how many valence electrons are present in a given molecule in order to determine its Lewis dot structure.

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If the mutation replaces one or more amino acids that do not form the same types of R group interactions as in the functional group protein, then the structure of the resulting protein can be altered so much that it has little or no functional activity.

A mutation is defined as a change in the DNA sequence of an organism. Mutations usually result from errors in DNA replication during cell division, exposure to mutagens or a viral infection.

Hereditary mutations includes cystic fibrosis, hemophilia, and sickle cell disease. Also other mutations can happen on their own throughout a person's life. These are generally called as sporadic, spontaneous, or new mutations. They affect only few cells.

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For the equilibrium Fe³⁺ (aq) + SCN⁻(aq) → FeSCN²⁺ (aq) + heat equations for the reactions is describe as below:

Since, it is an equilibrium if you apply any stress (concentration of product or reactant, heat and pressure) on the reaction. it will adjust itself in order to reduce the applied stress.

a. FeCl solution, 0.10 M

FeCl → 3 Fe³⁺ +3Cl³⁻

it increases the concentration of Fe³⁺ hence, equilibrium is shifted towards right.

b. KSCN solid

KSCN → K⁺ +SCN⁻

it increases the concentration of SCN (reactant) hence, equilibrium is shifted towards right.

c. Fe(NO₃) ₃ solution, 0.10 M

Fe(NO₃)₃  → Fe³⁺ + 3NO₃⁻

it increases the concentration of Fe³⁺, hence, equilibrium is shifted towards right

d. Na₂HPO₄, solution, 0.10 M

Na₂(HPO₄) → 2Na⁺ + HPO₄²⁻

HPO₄²⁻ +Fe³⁺ → Fe₂ (HPO₄)₃

since, it reduces the concentration of Fe³⁺ equilibrium will shifted towards left side

e. Na₂HPO₄ solid

since, it reduces the concentration of Fe³⁺ equilibrium will shifted towards left side.

f. Deionized water

It will reduce the formed heat, and the heat required for the backward reaction is not available. equilibrium will stay on right.

(will not affect)

g. Ice

It will reduce the formed heat and the heat required for the backward reaction is not available, equilibrium will stay on right.

So, this is the explanations for the given reaction.

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A common intermediate in the conversion of glycerol and lactate to glusoce is glucose-6-phosphate.

Glycerol is an alcohol sugar which is composed of two polyols produced during the saponification of fats and oils. Triglycerides and phosphatidyl phospholipids are two alcohol sugars that serve as metabolic intermediates.

The RBC's in our blood that transports oxygen from lungs to other parts of our body and muscle tissues produce lactic acid.

The common intermediate in the conversion of glycerol and lactate to glucose is glucose-6-phosphate. In the gluconeogenesis pathway, glucose enters as DHAP. It bypasses through other compounds viz. phosphonyl pyruvate, pyruvate, oxaloacetate and malate. Lactate also passes through these on its way in glucose synthesis.

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Corundum would most likely be useful in Gemstone Cutting. This is because of the extreme hardness that makes it an abrasive. Generally, both synthetic and natural corundum are used in a number of industrial applications that need its toughness, chemical stability, and hardness.

Corundum is a mineral that has a hardness of 9 on the Mohs scale.

Corundum is a rock with a hardness of 9. According to the data on the Moh's scale, corundum comes after diamond with a hardness scale of 9 below that of the diamond rock which is 10. Corundum comes immediately before Topaz which has a hardness scale of 8.

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grinding glass is the correct answer :)

Answer:

Diagram A

Explanation:

The information tells us that Hf = -1086.4 kJ mol-1. Since the value is negative, this tells us that the reaction is exothermic. In an exothermic reaction, energy is given out to the surroundings, thus the arrow must go from the reactants to the products to show the drop in enthalpy.

Yes, it is possible.

The tensile modulus of the linear and isotactic poly(vinyl chloride) will be higher. Compared to branched polymers, linear polymers are more prone to crystallize.

What is the mechanical properties of polymers?

The moduli of elasticity and other classes of strength measures, such as the yield and tensile strengths, can be used to characterize the mechanical properties of polymers in a manner that is quite similar to that of metals or other common crystalline materials. The most significant mechanical and elastic characteristics of polymeric materials are summarized generally below:

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Time taken the transformation to go to 80% completion t = 259.04 sec

From Avrami equation we have

Y= 1 - e^{-Kt^n}  

here

Y = 50%

T Time of reaction completion = 148 sec

n = 1.8

putting all value to get constant K

0.5=1- e^{-K*148^1.8}

e^{-K*148^1.8} = 0.5

Taking log on both side

-K*148^{1.8} = -0.693

K=8.59 * 10^{-5}

NOW GIVEN

0.85= 1 - e^{- 8.59 * 10^{-5} *t^1.8}

e^{- 8.59 * 10^{-5} *t^1.8} = 0.15

Taking log on both side

- 8.59 * 10^{-5} *t^1.8 = -1.897

t = 259.04 sec

The speed at which a chemical reaction occurs is called the reaction rate, and it is defined as proportional to the increase in the concentration of a product per unit time and to the. decrease in the concentration. of a reactant per. unit time. Reaction rates. can vary significantly. For instance, cellulose burns in a fire in a matter of fractions of a second, unlike the sluggish, years-long oxidative corrosion of iron under the Earth's atmosphere. The rate typically decreases with time for most reactions. Monitoring the concentration alterations over time allows one to calculate the pace of a reaction.

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Sodium thiosulfate is the inorganic compound with chemical formula Na2SO3. It is white, water-soluble solid and is used as an antioxidant and preservative.

Because of its complex forming property,  NA2S2O3 removes undeveloped silver halides from photographic emulsions.

Na2S2O3 is used by photographers to fix developed negatives and prints as it acts by dissolving the part of silver salts coated on film which remains unchanged by the exposure to light.

Fixation is achieved by treating film or paper with solution of thiosulfate salt. Popular salts sodium thiosulfate (commonly called hypo) and ammonium thiosulfate are used in modern rapid fixer formulae.

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Magnesium fluoride is the name of the ionic substance that results from the union of magnesium and fluoride ions. The compound has the chemical formula MgF2 Mg F 2.

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The r shows axial conformation at the equilibrium of the cyclohexane and mono groups.

Axial: In cyclohexane, a bond that is parallel to the axis of the ring, or a set connected via way of means of this type of bond. A = axial positions; E = equatorial positions.

Because the axial function locations the R corporations in the direction of the hydrogen atoms on the opposite carbons, the axial conformation calls for better to triumph over the extra steric interactions. This outcomes in R values which can be weighted toward the equatorial conformation. The larger, greater complicated the R group, the greater electricity this is required to triumph over the delivered steric interaction.

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Amino acids are colourless compounds. In order to see the spots on the chromatogram, you will apply a solution of ninhydrin to the paper. Ninhydrin will react with the amino acid to produce a purple compound. Silica gel will serve as the stationary phase in the thin layer chromatography procedures.

Ninhydrin (or fluorescamine) is very useful in chromatographic methods for the analysis of amino acids. One of these is paper chromatography, wherein amino acids are separated as the consequence of differences in their partition coefficients between water and an organic solvent. The aqueous phase is held stationary in the pores of the paper because of strong interaction of the water with the hydroxyl functions of the cellulose. The differences in partition coefficients show up as differences in rates of migration on the surface of moist (but not wet) paper over which there is a slow flow of a water-saturated organic solvent.

In chemical analysis, chromatography is a laboratory technique for the separation of a mixture into its components. The mixture is dissolved in a fluid solvent called the mobile phase, which carries it through a system on which a material called the stationary phase is fixed.

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The blue spheres are nitrogen atoms in their oxidation states, whereas the red spheres are oxygen atoms. This means that the charge must be calculated by adding the oxidation number of the nitrogen atom and the total of the oxidation states of the oxygen atoms.

what is red spheres and the blue spheres?

The oxidation state of nitrogen ranges from 3 to +5. It is in the oxidation states of 3 for ammonia (NH3) and 5 for dinitrogen pentoxide (N2O5). Despite having a +5 oxidation state, nitrogen does not produce pentahalide. Fluorine has a lower electron gain enthalpy with a negative sign than chlorine. In the ozone molecule, the two oxygen-oxygen bond lengths are the same.

The oxidation state of nitrogen is +3 in nitrous acid HNO2 and nitrous oxide N2O3, a dark blue liquid with acidic characteristics.

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Nonmetallic wiring techniques must be inherently resistant to chemicals based on their identification for the particular chemical reagent when they are exposed to chemical solvents or vapours.

Non-metals are minerals (non-metallic minerals) that are typically not used as a source of raw materials for the extraction of metal. The non-metal group, which is present in a wide range of minerals, is crucial economically. In actuality, aqueous solutions are ones whose solvent is water. According to their chemical makeup, organic solvents can be categorised into three groups: hydrocarbons, oxygen, and halogens. In the sections that follow, we'll discuss the many categories of organic solvents and give some instances of each.

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The required temperature is 500 degrees

Oxidation Catalysts help lower engine emissions through chemical reactions that convert carbon monoxide, hydrocarbons and aldehydes into carbon dioxide and water.Catalytic oxidation are processes that rely on catalysts to introduce oxygen into organic and inorganic compounds. Many applications, including the focus of this article, involve oxidation by oxygen. Such processes are conducted on a large scale for the remediation of pollutants, production of valuable chemicals, and the production of energy.Oxidation catalysis is conducted by both heterogeneous catalysis and homogeneous catalysis. In the heterogeneous processes, gaseous substrate and oxygen (or air) are passed over solid catalysts. Typical catalysts are platinum, and redox-active oxides of iron, vanadium, and molybdenum.

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The term "quantum" refers to the amount of energy needed to move an electron from one energy level to the next higher one.

It also applies here when it comes to moving electrons between levels because it refers to the smallest amount of energy required to do anything. It is a part of quantum physics, which deals with quantum theory and studies levels at which things are molecular, atomic, and subatomic.

A process known as absorption occurs when an atom transitions from its ground state to an excited state by absorbing energy from its surroundings. The electron takes in the energy and advances to a higher level of energy. By dissipating the extra energy it took in during the emission process, the electron returns to the ground state.

The energy of orbitals is the energy required to move an electron from one orbital to another or the energy released when an electron is added from another orbital.

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Hydrogen peroxide, H2O2, decomposes as 4H₂O₂ → 4H₂O + 2O₂ when four reactant molecules are used.

The following diagram illustrates how hydrogen peroxide decomposition chemically: 2H₂O₂ → 2H₂O + O₂

As a result, one oxygen molecule and two water molecules result from the breakdown of two hydrogen peroxide molecules. Numerous chemical substances spontaneously react with molecular oxygen to produce peroxides in the form of free radicals. Given that there are four hydrogen peroxide molecules breaking down in the diagram, we have;

4H₂O₂ → 4H₂O + 2O₂

The breakdown of hydrogen peroxide, H2O2, into water and oxygen gas is the first stage of this reaction. At room temperature, this reaction is thermodynamically advantageous.

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A hydrogen bond is weak force between atoms in a molecule, but is of enormous importance in physiology.

What is Hydrogen Bonding?

Dipole-dipole interactions between molecules that do not include a covalent bond to a hydrogen atom are known as hydrogen bonds. The attraction between two incredibly electronegative atoms, such N, O, or F, and a hydrogen atom that is covalently bonded to one of them causes it to occur.

Any electronegative atom, such as oxygen, chlorine, or fluorine, may make up the other atom, whereas one of the atoms is hydrogen. Between molecules or between two different molecules, hydrogen bonds can develop between the atoms.

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1. Draw only the valence electrons.

2. Give every element main group element (except hydrogen) an octet of electrons.

3. Give each hydrogen two electrons.

Lewis structures are used to describe the arrangement or configurations of the valence electrons of molecules and polyatomic ions involved in electronic bonding. A Lewis structure consists of the symbols of the elements in the molecule surrounded by dots with each dot representing each of the elements valence electrons. Also, the electrons shared between two elements are shown by dots between the two elements and these electrons are known as shared electron pairs. The valence electrons on atom that is not involved in bonding is known as lone pairs.

The three general rules for drawing Lewis structures are:

1. Draw only the valence electrons. Only the valence electrons of the atoms of elements are shown since they are the only electrons involved in chemical bonding.

2. Give every element main group element (except hydrogen) an octet of electrons. The complete eight valence electrons of the noble gases is associated with their stability. Thus, the main group elements show a tendency to form enough bonds to obtain eight valence electrons in order to achieve stability. This is known as the octet rule. However, since the maximum number of valence electrons for elements in the first period of the period table is two, the noble gas helium has completely-filled valence shell containing two electrons known as a duplet. Hydrogen belongs to the first period and is therefore an exception to the octet rule.

3. Give each hydrogen two electrons. Hydrogen attains a duplet structure in accordance with the structure of helium

Therefore, the three sentences are: Draw only the valence electrons. Give every element main group element (except hydrogen) an octet of electrons. Give each hydrogen two electrons.

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[NOTE: THIS IS AN INCOMPLETE QUESTION. THE COMPLETE QUESTION IS: Select the keyword or phrase that will best complete each sentence about the three general rules of for drawing Lewis structures.a. main group b. hafnium c. valence d. hydrogen e. core f. transition metal1. Draw only__the electrons. 2. Give every___element (except hydrogen) an octet of electrons. 3. Give each____two electrons.]

Trees and plants are the dominant sources of methane gas emissions. Therefore, option (B) is correct.

Methane can be described as a chemical compound with the chemical formula CH₄. Methane can be described as a group-14 hydride, the simplest alkane, and the main component of natural gas. The abundance of methane makes it an economically attractive fuel.

Naturally, occurring methane can be found both below ground and under the seafloor and is produced by both geological and biological processes. The largest reservoir of methane gas is found under the seafloor in the form of methane clathrates.

The methane concentration in Earth's atmosphere has increased by about 150% and it accounts for 20% of the total radiative emission from all of the long-lived and mixed greenhouse gases.

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All of the acidic impurities present in the reaction mixture could be eliminated with the aid of sodium carbonate. Any acidic contaminant can be detected by the addition of sodium carbonate, which causes carbon dioxide to form.

The initial action can be neutralizing the response, which enables you to isolate the ester product. The addition of sodium bicarbonate, a weak base, could help achieve this. The carboxylic acid and acid catalyst react with sodium carbonate, raising the pH of the solution as a result.

A byproduct of CO2 fuel is created when the natural portion of the reaction aggregate is washed with sodium bicarbonate to remove extra acetic acid. You can release the pressure that develops below by venting the vial.

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A chemist prepares solution of aluminum chloride by measuring out of aluminum chloride in volumetric flask and filling the flask to mark with water : True.

An aqueous solution of aluminum chloride is prepared by the redox reaction between aluminum metal and dilute hydrochloric acid.

Aluminum chloride solutions is moderate to highly concentrated liquid solutions of Aluminum chloride. Aluminum chloride is one of the most powerful Lewis acid.

Generally, it is used in reactions as a catalyst and aqueous aluminum chloride is prepared by dissolving aluminum with concentrated hydrochloric acid. After reacting with compound, it  reacts with water molecule and forms aqueous solution.

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Increasing electronegativity for the following chemical would be: Florine > Carbon > Boron > Aluminum > Calsium > Cesium > Barium.

When atoms can attract electrons during chemical bonding, they are said to be electronegativity.

Electronegativity rises from left to right across the periodic table. The reason for this is that as the atomic number rises, there are more protons. Due to the growing size of the atoms, electronegativity decreases from top to bottom. As a result, fluorine is regarded as the element with the highest electronegative potential, whereas cesium has the lowest. The electronegativity of a halogen is thought to be high, while that of an alkali metal or an alkaline earth metal is thought to be low.

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In the electrolysis of water, will it take to produce 235.0 l of H₂ at 1.0 atm and 273 k using an electrolytic cell through which the current is 221.0 mA is 25448 hour.

The ideal gas equation is given as :  

P V = n RT

pressure , P = 1 atm

volume , V = 235.0 L

temperature , T = 273 K

gas constant, R = 0.082 atm L /mol K

n = P V / R T

n = (1 × 235 ) / ( 273 × 0.082)

n = 10.49 mol

the reaction is given as :

2H⁺  +   2e⁻  ---->  H₂

number of electrons = 2

1 mole of electron = 96500 C

10.49 of electron = 10.49 × 2 × 96500

                         =  2024570 C

I = 221 mA = 0.221 C/s

q = It

t = q / I

t = 2024570 / 0.221

t = 9160950 s

t = 25448 hour

Thus, in the electrolysis of water, the tike taken is 25448 hour.

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