All the above mentioned facts suggest the sequence of amino acids to be Lys-Met-Ala-Phe-Cvs-Trp from N terminus to C terminus.
4.Carboxypeptidase is a protease enzyme that hydrolyzes (cleaves) a peptide bond at the carboxx terminal (C-terminal) end of a protein or peptide.
Hence tryptophan is at the C terminus of the peptide
5. Cyanogen bromide hydrolyzes peptide bonds at the C-terminus of methionine residues.
6.Trypsin cleaves peptide chains mainly at the carboxyl side of the amino acids lysine or arginine. Above two statements along with 2 and 3 in the question suggest the sequence to be
Lys-Met-X-X-X-TER
7. Chymotrypsin preferentially cleaves peptide amide bonds where the carboxyl side of the amide bond is a large hydrophobic amino acid (tyrosine, tryptophan, and phenylalanine). This fact along with point no. 4 in the question suggests the sequence to be Lys-Met-X-Phe-Cys-Trp
All the above mentioned facts suggest the sequence of amino acids to be Lys-Met-Ala-Phe-Cvs-Trp from N terminus to C terminus.
Amino acids are organic compounds containing both amino and carboxylic acid functional groups. [1] There are hundreds of amino acids in nature, but the most important are the α-amino acids found in proteins.There are only 22 α-amino acids in the genetic code.
amino acids can be classified as alpha (α), beta (β), gamma (γ), or delta (δ) amino acids according to the position of the core structural functional group. Other categories relate to polarity, ionization, and type of side-chain groups (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.). In the form of proteins, amino acid residues constitute the second largest component of human muscle and other tissues (water being the largest). In addition to their role as residues of proteins, amino acids are It is involved in many processes such as neurotransmitter transport and biosynthesis. They are thought to have played a key role in making possible life and its origins on Earth.
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Complete, balance and write the net ionic equation for the following reaction: CH3COOH(aq) + NaOH(aq)
The net ionic equation for CH3COOH(aq) + NaOH(aq) reaction is; CH3COOH(aq)+OH⁻(aq)→CH3COO⁻(aq)+H2O(l)
The acetic acid will react with sodium hydroxide to give sodium acetate and water. The molecular equation is shown below.
CH3COOH(aq)+NaOH(aq)→CH3OONa(aq)+H2O(l)
The above molecular equation is already balanced as there are the same numbers of elements on both sides. This reaction is an acid base reaction as an acid and a base react to form salt and water.
Both acetic acid and sodium hydroxide will exist in the form of their constituent ions because they are soluble in aqueous solution.
By breaking all the strong electrolytes in to their constituent ions, we get the complete ionic equation as follows:
CH3COOH(aq)+Na^+(aq)+OH⁻(aq)→CH3COO⁻(aq)+Na^+(aq)+H2O(l)
By removing the spectator ions we can get the net ionic equation.
In the complete ionic equation, Na+ ion is the spectator ion as it is present on both the sides of the equation. So by removing it we can get the net ionic reaction.
The net ionic equation is shown as follows:
CH3COOH(aq)+OH⁻(aq)→CH3COO⁻(aq)+H2O(l)
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rank the speed of sound through the following from greatest to least: a. helium b. benzene c. mercury
The the density of the substance that sound travels through directly affects its speed. Helium and benzene are the two liquids of a three media mentioned. Mercury is a metal, but it is also liquid.
What is density, for instance?How much "stuff" is contained in a specific quantity of space is determined by its density. For instance, a block of the harder, lighter element gold (Au) will be denser than a block of heavier element lead (Pb) (Au). Styrofoam blocks are less dense than bricks. Mass per cent volume serves as its definition.
What are density's two characteristics?The two physical characteristics of matter—mass and volume—are necessary for the classification of something as matter. The mass to volume ratio of a substance or item is known as its density. Mass per volume unit or weight divided by volume are two other ways to describe density.
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Construct a multistep synthetic route for the synthesis of acetylene from ethane by identifying the reagents and products of each step. Note that each bin will hold only one item, and not every given reagent or structure will be used. (Stoichiometry is omitted.)
1. reagent 1
H3C—CH3 2. reagent 2 H-C=C—H
(ethane) (acetylene)
3. reagent 3
4. reagent 4
The synthetic route for the synthesis of acetylene from ethane is:
Reagent 1: Br₂, hν, Photobromination.
Reagent 2: (CH₃)₃CO⁻K⁺ , Dehydrobromination.
Reagent 3: Br₂, Bromination.
Reagent 4: NaNH₂, Elimination.
What is the synthesis route?The process used to create a certain product is known as a synthetic pathway. Chemists may need to be able to look backwards to examine the specific ingredients from which the desired product might be made.
(1) Ethane to Bromoethane, the reagent 1 required is:
Br₂, hν, Photobromination.
(2) Bromoethane to Ethene, the reagent 2 required is:
(CH₃)₃CO⁻K⁺ , Dehydrobromination.
(3) Ethene to 1,2-dibromoethane, the reagent 3 required is:
Br₂, Bromination.
(4) 1,2-dibromoethane to Ethyne, the reagent 4 required is:
NaNH₂, Elimination.
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The complete question is as follows:
Construct a multistep synthetic route for the synthesis of acetylene from ethane by identifying the reagents and products of each step. Note that each bin will hold only one item, and not every given reagent or structure will be used. (Stoichiometry is omitted.)
1. reagent 1 H3C—CH3
2. reagent 2 H-C=C—H(ethane) (acetylene)
3. reagent 3
4. reagent 4
In the bromination reaction of your chalcone, you form a racemic mixture.a. Draw the structure of the enantiomers you form and assign R, and S to each of thestereocenters.b. Will you see 2 spots on a TLC of your reaction products? Why or why not?
(B) No, enantiomers can not be separated over TLC, hence, they will appear at same Rf value. This is because both have similar electronic environment and bind to silica with same extent.Enantiomers are pairs of compounds with exactly the same connectivity but opposite three-dimensional shapes.
Enantiomers are not the same as each other; one enantiomer cannot be superimposed on the other. Enantiomers are mirror images of each other.Any reaction or process in which bromine (and no other elements) are introduced into a molecule. Bromination of an alkene by electrophilic addition of Br2. Bromination of a benzene ring by electrophilic aromatic substitution.The mechanism of reaction between ethene and bromine is an electrophilic addition reaction. During the reaction, one of the bromine atoms receives a partial positive charge. That bromine atom attacks the double bond in ethene, forming a cyclic structure, giving the attached bromine a positive charge.
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in the reaction above, pyruvate: select one: a. reduces nad b. oxidizes nad c. reduces acetyl coa d. oxidizes acetyl coa
The correct answer to this question is pyruvate oxidizes in case of the aerobic respiration to generally form acetyl Coenzyme A or CoA which involves three major steps decarboxylation along with the reduction of the NAD+, and at the last attachment of CoA.
In the cellular inner space or the matrix, pyruvate is usually modified in a series of steps:
Step 1 : Pyruvate mostly loses the carboxyl group, which is then usually liberated as a carbon dioxide molecule, generally leaving a two-carbon molecule in its original place.
Step 2 : The two-carbon molecule from step 1 is further changed and oxidised, and then NAD+ takes up the all the lost electrons to create NADH.
Step 3 : Coenzyme A (CoA), an organic susbstance generated usually from the vitamin B5, is then joined with the oxidised two-carbon molecul. an acetyl group, to form the acetyl CoA. The role or the work of acetyl CoA, also designated as a carrier molecule, in this process is to transport the formed acetyl group to the citric acid cycle.
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at chemical equilibrium, the rate of the forward reaction will be____the rate of the reverse reaction.
Answer: Equal to
Explanation:
Because the equation is at equilibrium both the directions of the reactions will be happening at the same rate.
A student performed the Fractional Crystallization experiment described with the following results: Initial mass of sample mixture: 4.958 g, mass of salicylic acid recovered, 0.586 g; mass of CuSO4•5H2O recovered, 3.12 g. The recovered CuSO4•5H2O was then heated for 15 minutes at 130 °C. The mass of the new hydrate was 2.17 g. Calculate the value of X in the formula for the new hydrate CuSO4•XH2O.
Answer:
74.75%
Explanation:
To calculate this, we simply add the mass of the salicylic acid and the mass of the copper sulphate.
The addition will yield the following.
Mass of salicylic acid recovered = 0.586g
Mass of copper sulphate recovered = 3.12g
The addition of both is = 0.586g + 3.12g = 3.706g
The percentage composition can be calculated by dividing this by the original mass of the mixture before crystallization and dividing by 100.
3.706/4.958 * 100 = 74.75%
Which of these would cause a DECREASE in
energy?
A. DECREASING both wave frequency and wavelength
B. DECREASING the wave frequency and INCREASING the
wavelength
C. INCREASING both wave frequency and wavelength
D. INCREASING the wave frequency and DECREASING the
wavelength
A. DECREASING both wave frequency and wavelength.
B. DECREASING the wave frequency and INCREASING the wavelength.
What is the energy of a particle?According to the formula E=hf
where;
E is energy, h is Planck's constant, and f is the frequency of the wave,An increase in frequency leads to an increase in energy. Conversely, a decrease in frequency leads to a decrease in energy.
The wavelength of the wave does not directly affect the energy of the wave, but it is inversely proportional to the frequency. This means that as wavelength increases, frequency decreases and vice versa.
Therefore, option A, which involves decreasing both wavelength and frequency, would lead to a decrease in energy. Option B involves decreasing frequency and increasing wavelength, which would also result in a decrease in energy. Option C involves increasing both wavelength and frequency, which would lead to an increase in energy. Finally, option D involves increasing frequency and decreasing wavelength, which would also lead to an increase in energy.
Thus, the correct answer is either A or B, both of which involve decreasing frequency.
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Answer: the answer is B
Explanation: its correct
which of the following statements are true concerning co32-? the central carbon atom is sp2 hybridized. the bond angles about the central carbon atom are about 109o. there are three sigma bonds in co32-. all carbon-oxygen bonds are equal in bond length. there are two resonance structures for co32-
The central carbon atom is sp2 hybridized, has three sigma bonds and has two resonance structures.
Which of the following statements are true concerning co3^2?
the central carbon atom is sp2 hybridized. the bond angles about the central carbon atom are about 109o. there are three sigma bonds in co32-. all carbon-oxygen bonds are equal in bond length. there are two resonance structures for co32-The correct options are : 1, 3 and 4
Option 1 is correct because carbon atom in CO3^2- posses sp2 hybridization. A carbon atom is sp2 hybridized when bonding takes place between 1 s-orbital with two p orbitals. Option 2 is incorrect because carbon is sp2 hybridized, hence bond angle will be about 120°. There is a formation of two single bonds and one double bond between three atoms. The hybrid orbitals are placed in a triangular arrangement with 120° angles between bonds.Option 3 is correct because there are three sigma bonds. Three sigma bonds are formed from each carbon atom for a total of six sigma bonds in the molecule.Option 4 is correct because all carbon oxygen bonds are equal.Option 5 is incorrect because there are three resonating structures for CO3^2-To learn more about sp2 hybridization visit:
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Which of the following statements is true?
Diffusion involves the movement of molecules using transport proteins.
Diffusion involves the breaking down of dead organelles.
Diffusion involves the movement of molecules in the cytoplasm.
Diffusion involves the movement of molecules into or out of a cell.
Diffusion involves the movement of molecules into or out of a cell.
The Correct answer is d) Diffusion involves the movement of molecules into or out of a cell.
What is Diffusion?The process of molecule movement along a concentration gradient is called diffusion. When molecules travel from one area with a higher concentration to one with a lower concentration, it happens. Every living creature experiences it, and it is a significant process.The movement of materials into and out of cells is facilitated by diffusion. The molecules move from an area of higher concentration to an area of lower concentration until the concentration is the same everywhere.Since molecules can move about in gases and liquids, diffusion takes place in such media.Diffusion is frequently employed throughout several academic fields, including physics, chemistry, and biology. The two primary types of diffusion are simple diffusion and assisted diffusion.To learn more about Diffusion refer to:
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This is a chemical produced by cells in the body, which circulates throughout the body in the bloodstream: __________. It affects a wide range of functions and acts on one or more target _________.A. hormone/tissuesB. chondrocyte/organ systemsC. hormone/mitochondriaD. chondrocyte/mitochondriaE. amino acid/chloroplastsF. lipid/membranesG. hormone/membranes
This is a chemical produced by cells in the body, which circulates throughout the body in the bloodstream is Hormone. It affects a wide range of functions and acts on one or more target as tissues.
So, correct answer is Option A Hormone/Tissue
The chemical messengers of the body, hormones communicate with tissues and the bloodstream. Hormones affect a variety of bodily functions, including growth and development, metabolism—the process through which your body converts food into energy—sexual function, reproduction, and mood.
Tissue is colection of huge amount of cells. Connective tissue, epithelial tissue, muscular tissue, and nerve tissue are the four fundamental forms of tissue. Other tissues are held together and supported by connective tissue (bone, blood, and lymph tissues). A coating is provided by epithelial tissue (skin, the linings of the various passages inside the body).
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An atom of polonium-218 undergoes alpha decay. What new element is produced?
Alpha decay occurs in a polonium-218 atom. A brand-new lead element is created. The atomic number and total mass both drop by 2 and 4 respectively as a result.
Lead is a chemical element with the atomic number 82 and the symbol Pb (derived from the Latin word plumbum). Denser than the majority of materials, it is a hefty metal. In addition to having a comparatively low melting point, lead is soft and flexible. Lead is a lustrous grey with a tinge of blue when it is first cut. The total number of protons and neutrons (collectively known as nucleons) in an atomic nucleus is known as the mass number, also known as the atomic mass number or nucleon number (sign A, from the German word Atomic weight [atomic weight]).
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the oxygen atom and hydrogen atoms within a water molecule are held together by____bonds.
Answer: Covalent Single Bonds
Explanation:
Because water is comprised of hydrogen and oxygen these elements share their electrons with each other. That means the bond is called covalent, because they are comprised of shared valence electrons. The bonds are also single, but that is less important.
theoretically your best fit line should go through the origin (0,0). i.e. if the concentration of the material is 0 mol/l then its absorbance should also be zero. however, this may not be the case. list one reason that your best fit line may have an intercept not equal to zero and explain what you could do to correct for this error
Since there is no light absorption, the trendline must cross at (0, 0). The substance should have zero absorbance if its concentration is 0 mol/l.
Concentration is the ratio of a constituent's abundance to the mixture's overall volume. The concentration can refer to any form of chemical mixture, but is most usually used to describe the solutes and solvents in solutions. There are several different types of mathematical descriptions: mass concentration, molar concentration, number concentration, and volume concentration[1]. In common language, concentration is described qualitatively by the use of adjectives like "dilute" for solutions with a relatively low concentration and "concentrated" for solutions with a relatively high concentration. The molar (amount) concentration has variations, such as normal concentration and osmotic concentration. More solute (such as alcohol) or less solvent must be added to a solution to concentrate it (for example, water).
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p-450 enzymes that hydroxylate a variety of hydrophobic compounds, including xenobiotics, are found in the:
P450 enzymes that hydroxylate a variety of hydrophobic compounds including xenobiotics are found in the liver cells.
CYP450 enzymes evolved as the primary defense against xenobiotics and in this process are also responsible for the bioactivation of drugs and toxicants to more reactive intermediates. Cytochrome P450 enzymes are primarily found in liver cells but are also located in cells throughout the body.
Cytochromes P450 are enzymes that oxidize substances using iron and are able to metabolize a large variety of xenobiotic substances. CYP enzymes are linked to a wide array of reactions including O-dealkylation S-oxidation epoxidation and hydroxylation. Cytochrome P450 enzymes are essential for the production of cholesterol steroids prostacyclins and thromboxane A2.
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g what kind of intermolecular forces act between an ammonia molecule and a chloride anion? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.
So therefore we will say that that is there is also iron di pole interaction.
What is Intermolecular Forces?
Intermolecular forces, frequently abbreviated to IMF, are the appealing and repulsive forces that stand up among the molecules of a substance. These forces mediate the interactions between character molecules of a substance.
Intermolecular forces are accountable for maximum of the bodily and chemical properties of rely.
Forces also exist among the molecules themselves and these are collectively known as intermolecular forces. Intermolecular forces are specifically responsible for the bodily traits of the substance. Intermolecular forces are liable for the condensed states of matter. The debris making up solids and drinks are held together by way of intermolecular forces and those forces have an effect on some of the physical residences of matter in those states.
Meaning ionic bond can be fashioned right here and right here as we've this is iron and this is the disciple nature. So consequently we are able to say that this is there's also iron di pole interplay. So these three styles of inter molecular forces is found in ammonia and chloride.
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Does sodium and oxygen form an ionic bond?
Oxygen and sodium will combine to generate an ionic compound.
What kind of link do oxygen and sodium form?Since sodium is a component of an alkalis and oxygen is just a non-metal as well as a gas, an ionic connection is created.Na + O2 NaO2 OR 4Na + O2 2Na2O (s) (s).
What occurs when sodium and oxygen bind?As an illustration, sodium and oxygen can react to form sodium oxide.To create the ionic substance sodium oxide, sodium atoms undergo a transformation into sodium ions.Atoms of sodium lose electrons; they have undergone oxidation.
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The rate of reaction of 0.030 g of magnesium ribbon with 1 M hydrochloric acid was studied at four different temperatures by measuring the time required for the magnesium metal to disappear. The following data was recorded: (4 points) Temperature 2°C 23 °C 40°C 53°C 56 Average Reaction Time (sec) 204 73 Average Reaction Rate (moles/sec) a. Calculate the number of moles of magnesium that reacted (2 points) b. Calculate and the average reaction rate for 2°C then complete the table above (2 points) c. Convert each temperature to kelvins (3 points) Temperature (°C) Temperature (K) 2°C 23°C 400 53 °C 75 °C Average Reaction Time (sec) 204 73 56 41 c. Plot the average reaction time versus temperature in the graph below. (10 points) e. Predict how long the reaction would take at 75 °C. (1 point) aation 10: Rate of Decomposition of Calcium Carbonate
Hydrogen gas is released and magnesium chloride is created when magnesium ribbon combines with hydrochloric acid.
The temperature of the test tube will change, there will be a faint fizzing of gas bubbles, and then the magnesium ribbon will dissolve into the water, turning it blue.
At four different temperatures, the time it took for 0.030 g of magnesium ribbon to react with 1 M hydrochloric acid was measured in order to determine the rate of reaction.
The following information was noted: Four points Temperature: 2°C, 23°C, 40°C, 53°C, and 56°C 204 seconds is the average reaction time. (moles/sec) Average Reaction Rate a. Decomposition of CaCO3 takes approximately one hour at 871 °C, resulting in a mass loss of approximately 44%, and approximately 24 hours at 641 °C.
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What are the coefficients needed to balance the equations C7H16 + O2 = CO2 + H2O
Answer: C7H16 + 11O2 = 7CO2 + 8H2O
Explanation:
Explanation attached:
why we needed to standardize the 0.1M NaOH solution used in sectino and what this standard involved?
To determine the precise concentration of a solution whose concentration is uncertain, it is necessary to standardize a NaO H solution.
To obtain an equivalency point and determine the unknown concentration, standardization involves titrating a known volume of N and O H with an acid in a flask.
Because N an O H is hygroscopic in nature—that is, it absorbs water from the air and changes its mass as a result—we cannot determine the precise molarity even when we employ a precise mass balance. The molarity also varies when the mass does. As a result, N an O H standardization is implemented.
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A combination of titanium and organoaluminum catalysts can induce this process in alkenes. The average degree of this process is given by the equation 1 over 1 minus p in the Carothers equation. One of the first synthetic substances formed by this process was created from the condensation of phenol and formaldehyde units and is called(*) bakelite. This process, which is promoted by Ziegler-Natta catalysts, comes in step-growth and chain-growth types. It can produce products such as LDPE and PVC. For 10 points, name this process that involves the combination of repeating units called monomers.
polymerization <David Dennis>/<ed. AR>
What are some examples of polymerization?The repeating units formed from small molecules known as monomers are bonded together to form a massive single chain-like molecule known as a polymer.Polymerization is the process through which monomers are converted into polymers.Ethylene, for instance, polymerizes to create polyethylene.
What are polymers and what types exist?A polymer is created when a lot of monomeric units react with one another during the polymerization process.The end products of polymerization might be either linear or branched macromolecules. Additionally, they can take the form of a sophisticated, three-dimensional network.
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reaction a starts with a 4 carbon chain where carbon 2 has a hydroxy substituent, and carbon 3 has two methyl substituents. this reacts with h b r in heat to generate the product.
In order of the number of carbon atoms, these are the first four members of the series: One carbon atom that is hydrogen-saturated is CH4 or methane. Two hydrogen-saturated carbons make up the compound ethane or C2H6.
A chain with one carbon (a methyl group, CH3) and an OH group attached to it is referred to as "methyl alcohol," whereas a chain with two carbons (an ethyl group, CH2CH3) and an OH group attached to the CH2 is referred to as "ethyl alcohol." The IUPAC nomenclature must be used for more complex alcohols.
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identify the condensed structure that corresponds to the following lewis structure. the lewis structure has a main backbone, which is four carbons long. bonded to the first carbon are 3 hydrogen atoms. bonded to the second carbon are 2 hydrogen atoms. bonded to the third carbon are 2 chlorine atoms. finally, bonded to the fourth carbon are 3 hydrogen atoms.
The condensed structure that corresponds to the the lewis structure has a main backbone is 2,2 dichloro butane.
A Lewis structure, also known as a Lewis point formula, Lewis point structure, electron point structure, or Lewis electron point structure, is a diagram showing the bonds between the atoms of a molecule and the lone pairs of electrons present in the molecule.
The Lewis structure is a very simplified representation of the valence shell electrons in a molecule. Used to describe how electrons are arranged around individual atoms in a molecule. Electrons are represented as "dots" or as lines between two atoms to join electrons.
The Lewis structure is based on the concept of the octet rule in which atoms share electrons, so each atom has eight electrons in its outer shell. For example, the oxygen atom has six electrons in its outer shell.
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Which is the correct sequence in the chain?
The proper food chain will consist of snakes, grass, insects, and birds. Who eats whom is a process that is described by a food chain. Plants are the source and the top carnivore is the finish line.
What is sequence chain?
Producers, primary consumers, secondary consumers, and decomposers make up a food chain in an ecosystem. In this case, the grass is the producer, while the bug is the first consumer. A bird consumes the insect as a secondary consumer, and a snake consumes the bird as a third consumer. Primary consumers receive the energy after primary producers. Energy is transferred from primary consumers to secondary consumers, and eventually to third-party consumers. The majority of food chains have three or four trophic levels.
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Suppose you are pumping air into a deflated basketball, so
that it is at a suitable pressure to play a game. Is this a good
example of Avogadro's law? Explain your answer.
No this is not a good exp of avogadro's law.
What is avogadro's law?Avogadro's Law states that, under the same conditions of temperature and pressure, equal volumes of any gas contain equal numbers of molecules. This law was first proposed by the Italian physicist Amedeo Avogadro in 1811, and was later confirmed experimentally by Josef Loschmidt. Avogadro's law is one of the most important physical laws in chemistry, as it is used to relate the macroscopic properties of a gas to the number of molecules it contains.
Avogadro's law states that equal volumes of gases, under the same temperature and pressure, contain the same number of molecules. In this case, the number of molecules in the basketball is not changing; the amount of air entering and leaving the ball is the same. The change is in the pressure of the air within the ball, which is not accounted for by Avogadro's law.
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select all the compounds from the following list that would give rise to two signals in the 1h nmr spectrum with an integration ratio of 2:3.
With an integrating ratio of 2:3, CH3CH2Br and CH3CH2CH2CH3 would produce two flashes inside the 1h nmr spectrum.
Why are Spectrum's costs so expensive?In a statement, Spectrum said, "Every year, TV producers increase the price associated with carrying their content, resulting in greater costs for the overall sector. We're passing along these higher prices to viewers as a clear result of the increasing expense of content from TV networks i broadcast."
Verizon or Spectrum, whose cost is less?Spectrum vs. Verizon in terms of plans and cost. When comparing the 300 Mbps options, Verizon is less expensive than Spectrum. Their gigabit rates are identically priced, but all 3 Spectrum Internet® plans see price rises after a year, unlike Verizon, whose plans do not.
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Fill in the missing products below. 1) Hg(OAC),, EtOH 2) NaBH4 Excess HI Heat RCOZH H-CEC: Na ? colet 1) NaSET 2) H2O ? HBr HBr ?
Depending on the exact conditions, NaBH4 reduces many organic carbonyls. Most commonly used in the laboratory to convert ketones and aldehydes to alcohols.
Efficient reduction of acyl chlorides anhydrides α-hydroxylations thioesters and imines below room temperature. NaBH4 is less reactive than LiAlH4 but otherwise similar. It is powerful enough to reduce aldehydes ketones and acid chlorides to alcohols. Esters amides acids and nitriles are hardly affected.
Sodium borohydride, also known as sodium borohydride and sodium tetrahydroborate, is an inorganic compound of the formula NaBH4. This white solid is usually found as a basic aqueous solution and is a reducing agent used in the paper and dyeing industry.
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Draw the Lewis structure for POCI_3 in the window below and then decide if the molecule is polar or nonpolar. Is POCI_3 polar or nonpolar?
The molecule is polar.
Since o is more electronegative it is on top and a being less electronegative is towards the bottom. Because the POCl3 molecule is nonsymmetric (o will pull the e from P and I will abo pull & from 1) so, it is Polar.
A molecule is non-polar if the arrangement is symmetrical and the arrows have the same length. A molecule is polar if the arrows are of different lengths and are not balanced. A molecule is polar if the configuration is asymmetric. When things are different at each end, we call them polar. Also, some molecules have positive and negative ends, and when they are present, we call them polar.
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Which of the following is a general trend for the electronegativity of elements in the periodic table? increases from left to right; decreases from bottom to top decreases from left to right; decreases from bottom to top O decreases from left to right; increases from bottom to top O increases from left to right; increases from bottom to top
A general trend for the electronegativity of elements in the periodic table is an increase from left to right from top to bottom.
The periodic table may be a rows and columns arrangement of the chemical elements. Electronegativity could be a degree of an atom's capacity to pull in shared electrons to itself. On the periodic table, electronegativity for the most part increments as you move from left to right across a period and decreases as you move down a group. As a result, the foremost electronegative components are found on the top right of the periodic table, whereas the slightest electronegative components are found on the bottom left.
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which of the statements below correctly describes one of the five defining criteria for being a mineral? A.Minerals only occur as solids. B.Minerals are not produced by biologically processes. C.Minerals can lack a repetitive geometric structure on the atomic scale. D.Each mineral has a definite chemical composition with no possibility for variation or the substitution of elements.
The correct statement among the given below statements is minerals only occur as solids. Hence, option A is correct.
By the definition of a mineral as a homogeneous solid, a mineral is composed of a single solid substance of uniform composition that cannot be physically separated into simpler chemical compounds. Homogeneity of the mineral is determined relative to the scale on which it is defined.
A naturally occurring, homogeneous inorganic solid is a substance which have a definite chemical composition and characteristic crystalline structure, color, and hardness. Types of minerals found in the earth's crust include azurite, aragonite, biotite, calcite, garnet, gold and pyrite.
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