Among the substances below, which can be thought of as cations bonded together by mobile electrons?   Select one:   a.P4(s) b.LiF(s) c.Hg(l) d.SiO2(s

Q: Question 18 How many electrons are in the highest shell of a Be atom? Enter a number. Question 19…

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Q: What would the hydrogen ion concentration be if the pOH was 6?

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Q: what’s the purpose of basifying the product in synthesis of 1,2,3,4-Tetrahydro-beta-carboline?

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Q: What is the major organic product of the following acid catalyzed hydrolysis reaction? OA OB OC O :0…

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Q: Ion selective electrode

A: An ion-selective electrode is also known as a specific ion electrode. It is a sensor or transducer…

Q: Which of the following statements is CORRECT? Select one: a.Real gases follow the postulates of the…

A: According to kinetic molecular theory, volume occupied by gaseous molecules is negligible, the gas…

Q: In the following sets of acids, rank the compounds in order of decreasing acidity (for example, A…

A: (A) Decreasing order of acidity, C > A > B  This is due to the negative inductive effect (-I…

Q: please clarify the step 4 C. Using elevation in boiling point, thank you

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Q: Is standardization against primary standard required for electrogravimetry using two electrode…

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Q: 38) A reaction is found to have an activation energy of 108 kJ/mol. If the rate constant for this…

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Q: C. Trehalose and isomaltose are both dimers of glucose. However, they have considerably different…

A: #C:  Trehalose is formed by the 1→1 glycosidic bond between two α-glucose units.  Isomaltose is…

Q: The [H3O+] of ammonia is 8.3 x 10-11M. What is the pH of ammonia? Use 2 decimal places for pH.

A: Given, [H3O+] of ammonia is 8.3 × 10-11 M  [H3O+] = 8.3 × 10-11 M pH of ammonia = ?

Q: Draw the mechanism for the acid-catalyzed reaction of acetic acid (ethanoic acid) with the methanol…

A: The given reaction is an good example of formation of an ester from its corresponding carboxylic and…

Q: 7. Show how the following carbohydrate forms a cyclic structure (hemiacetal). Ho H H (OH HITCH -041…

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Q: 22 How many pi bonds are formed in the hydrocarbon structure shown below?

A: Bonds are two type →1) Sigma bond (σ) 2) Pi bond (π)  A single bond contains sigma bond and a double…

Q: True or False: Mass spectra are like a fingerprint. Every compound has a unique one. Which mode of…

A: Mass spectra are like fingerprint.every compound has unique one.  True because it is different for…

Q: QUI Which of hydrogens a-d in the following molecule gives a doublet signal in its ¹H-NMR spectrum?…

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Q: Draw the structures of the TWO Reactants that will be needed to synthesized the desired product from…

A: Given reaction is acid catalyzed aldol reaction...

Q: 1. H₂S Total # of Valence Electrons: Lewis Structure (show all resonance structures if applicable)…

A: we have to fill the given two tables.

Q: A ¹H NMR spectrum is shown for a molecule with the molecular formula of C6H15N. Draw the structure…

A: using the NMR spectra and the molecular formula of the compound, we have to predict it's structure

Q: Consider the following reaction. What would be the equilibrium constant expression? CH4(g) + H₂O(g)…

A: Reactants are present on left side and products are present on right side of reaction.…

Q: Estimate the boiling point of water if for H 20 (), AH = -285.8 kJ/mol and S0 = 69.91 J/mol K and…

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Q: Match the drug type with the condition that affects clearance of the drug: ■ A) Low EH drug B) High…

A: •HEPATIC EXTRACTION (EH):- It is ability of liver to eliminate drug from blood or we can say…

Q: Briefly explain the theory of Clark and Lyons about the first enzyme-based electrode in detecting…

A: To explain the theory of Clark and Lyons about the first enzyme-based electrode in detecting glucose

Q: What is the correct IUPAC name of the following compound? Problem viewing the image, Click Preview…

A: To give the IUPAC name to the compound , first we will see the long carbon chain and then the…

Q: 2-Carboethoxycyclohexanone (A) can be prepared by condensation reactions as follows. Path 1: Via…

A: Since you have posted a question with multiple sub-parts ,we will solve first three sub-parts for…

Q: Draw the structure for the two compounds below and give the number of peaks that would be observed…

A: Given organic compounds are, m-chlorobenzamide s-cis-2,3-dimethyl-1,3-butadiene. In 1HNMR number of…

Q: (b) The critical constants of Pc, T. and Vme of ethane, C₂He, were given as 48.2 atm, 305.4 K and…

A: Molar mass of ethane is 30 g/mol. Given value of Pc ,Vc and Tc are respectively 48.2 atm, 148…

Q: What is the molarity of a solution made by dissolving 20.0g of H2PO4 in 50.0mL of solution? Show the…

A: Molarity is defined as number of moles of dilute dissolved per liter of solution.

Q: A solution of 0.675M KOH is used to titrate 25.0 mL of an H2SO4 solution. If 36.6 mL of the KOH…

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Q: Is standardization against primary standard required for controlled potential coulometry ?

A: Controlled potential coulometry, as the name suggests, is a coulometry method that measures the…

Q: AATT You are a researcher in a geochemistry laboratory. A colleague brought to you a new mineral…

A: Here we are required to find the mass percent.

Q: (iv) Greater electron affinity: Se or Sn

A: Electron affinity is defined as the amount of energy released when an electron is added to a neutral…

Q: Question 23 Show the preparation of 2,4-dimethylpentanal using Malonic ester synthesis or…

A: Here we have to synthesize 2,4 -dimethylpentanal from malonic ester synthesis.

Q: A gas has a volume of 1.71 liters at a temperature of 87c and pressure of 775 torr. What is the…

A: Given,  The initial volume of a gas = 1.71 L Final volume of a gas = 2.3 L The initial temperature…

Q: (2) Caffeine (C8H₁0N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a solution…

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Q: QUESTION 30 Below is a titration curve of a sample of monoprotic acid (HA) by NaOH. Which is most…

A: A titration curve is the plot drawn by taking pH of the analyte solution on Y axis and  volume of…

Q: For the Lewis dot structure shown below, predict: Y=X=Y      (b) what is the bond angle?

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Q: Draw the skeletal (line-bond) structure of 5- bromo-4,4-dimethylpent-2-yne.

A: Here, we have to draw the skeletal structure of 5-bromo-4,4-dimethylpent-2-yne.

Q: Complete the following base-catalyzed Self-Aldol Condensation reaction mechanism. Draw the structure…

A: Reactant is cyclohexanone. It has alpha hydrogens which in the presence of a base can be extracted…

Q: Suppose 13.8g of sodium iodide is dissolved in 150ml of a 0.60M aqueous solution of silver nitrate.…

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Q: In SN2 mechanism, the intermediate produced is a carbocation. True False

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Q: A weak acid has a pKa of 7.48. What is the pH if the solution has 6,753 times more HA than A-?…

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Q: Sea water contains roughly 28.0g of NaCl per litter. What is the molarity of sodium chloride in sea…

A: Here we are required to find the Molarity of NaCl in sea water.

Q: The development of the Haber-Bosch process for manufacturing ammonia from elemental hydrogen and…

A: Given: The pressure = 20.0 MPa The temperature = 450 ∘C The volume of ammonia gas collected = 750 L…

Q: Calculate E cell for the following voltaic cell. Ag|Ag +(1.0 x 10-5 M)|| Au ³+ (1.0 × 10 −1 M)|Au 3

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Q: Q4.2 Sensitivity If 13C data were collected at this field using a protein concentration of 500 µM…

A: Answer. Sensitivity of 13C NMR is way much more than 1H NMR so, higher concentration of protein…

Q: 5. NO₂ Total # of Valence Electrons: Lewis Structure (show all resonance structures if applicable)…

A: We have to draw the Lewis structures for the given two molecules and fill the given tables

Q: What is the correct IUPAC name of the following compound? u Problem viewing the image. Click Preview…

A: We need to write the IUPAC name of given compound.

Q: а. ОН ОН о оо b. ОН CH3

A: In presence of electron withdrawing group, protons become desheilded where in presence of electron…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.