Which of the following central atoms would be expected to accommodate more than four electron pairs in some of its compounds?Simply explain your answer in a seperate sheet as well. F Br O N

Q: How many grams of a KCL solution that is 1.14% KCL by mass are needed to obtain 20.4 g of sucrose?

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Q: number of o bonds:

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Q: Set up a cell that has a Mg electrode in a 1.0 M aqueous Mg?+ solution on the left side and a Cu…

A: Left side of cell reaction represents oxidation Half cell i.e - - > oxidation of Mg Mg is…

Q: 3. Fill the boxes with the missing reactants, reagents, or the major product(s) expected from each…

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Q: Select all that apply. For each pair of isotopes listed, predict which one is less stable. (a) Li Li…

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Q: A block of metal is warmed irreversibly at constant pressure from 267 K to 315 K. The heat capacity…

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Q: Draw the skeletal (line-bond) structure of (R)-2-methyoxypentanal. Use a wedge or dash bond to…

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Q: Calculate entropy change 1. combustion of one gram of methane to form carbon dioxide and liquid…

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Q: Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for t decay…

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Q: (i). Using the reaction Zn(s) + 2Co3+ (aq) -› Zn?+ (aq) + 2Co2+ (aq) as an example, draw a diagram…

A: The electrochemical cell reaction is given as, Zn(s)+2Co3+(aq)→Zn2+(aq)+2Co2+(aq) From electro…

Q: 40 198 -1

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Q: In the system: C(s) + O2(g) + 2HCI(g) – COCI2(g) + H2O(g) + heat how is it possible to increase the…

A: Because heat is in product side hence if we increases amount of reactants C(s) , O2(g) , HCl(g) then…

Q: Draw the product in the following enzyme catalysed reaction

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Q: O CHEMICAL REACTIONS Using the Avogadro Number An aluminum atom has a mass of 4.48 × 10 -23 g and a…

A: Answer 1.     27.0 g  Answer 2.  1.85 × 105 moles

Q: The following transformation can be accomplished in two steps using potassium hydroxide (KOH) and…

A: Detail mechanistic pathway is given below to find out the product in intermediate stage

Q: Write the balanced nuclear equation for each of the processes described below. 1. positron emission…

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Q: How long can the battery deliver 5.0 A before going dead? Express your answer using two significant…

A: Given

Q: Non-ionizing radiation from a variety of sources is used for producing images in humans. Select any…

A: UV, visible light, infrared (IR), microwave (MW), radio frequency (RF), and very low frequency (ELF)…

Q: /hich of the following would be classified as cephalins? Select all that apply.) CH2 -C-(CH2)14CH3…

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Q: Calculate the volume in liters of a 4.30 x 10 -5 mM mercury(II) iodide solution that contains 100.…

A: 4.30 ×10-5 mM mercury(II) iodide solution means , 4.30 ×10-5 mmol = 4.30×10-8 mol mercury(II) iodide…

Q: Draw a voltaic cell for the given reaction (please include anode, cathode, and flow of electrons)…

A: The voltaic cell is the electrochemical cell in which the electric current produce due to the…

Q: What is the % concentration (m/v) of a solution prepared by dissolving 28.3 of NaOH in enough water…

A: Given, mass of NaOH = 28.3 g Volume of solution = 789 ml % (m/v) = ?

Q: What happens to blood pH (increase or decrease) when: A person holds their breath. (Does not exhale…

A: decrease When a person holds their breath, the level of carbon dioxide has been increased. This…

Q: pH of the solution that results when 20.0 mL of 0.175 45.0 mL with distilled water.

A: Givrn, Ka(Formic acid) = 3.74 M1 = 0.1750 M Volume (V1) = 20.0 mL V2 = 45.0 mL Using dilution law,…

Q: Gold-198 is used in the diagnosis of liver problems. If the half-life of Au-198 is 2.69 days: b. If…

A: Half life = 2.69 day Initial amount = 9.21 mg  Time = 72.9 days

Q: The heat of vaporization AH, of methanol (CH,OH) is 35.3 kJ/mol. Calculate the change in entropy AS…

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Q: Use the References to access important values if needed for this question. Use the standard…

A: Given reaction: Cu2+ (aq) + Cr2+ (aq) → Cu+ (aq) + Cr3+ (aq) We have to calculate the standard free…

Q: Exercise 16.133 6 of 21 Review I Constants I Periodic Table Common aspirin is acetylsalicylic acid,…

A: Aspirine is a weak acid , so we will use the relation of weak acid's pH , here first we need to…

Q: Kindly complete the following nuclear reactions. asap please

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: Complete and balance the following equation: Cr2O2−7(aq)+CH3OH(aq)→HCO2H(aq)+Cr3+(aq) (acidic…

A: The given redox reaction is as follows: Cr2O72- + CH3OH → HCO2H + Cr3+ A redox reaction is balanced…

Q: Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for the decay…

A: Given, Decay constant(k) = 8.66×10-2 /day Initial amount = 0.25 mg Time = 120 hrs = 5 days As we…

Q: Answer the following question with reference to the molecule below: 61 H3C H (a) Label…

A: Answer - Since you have posted multipart of question as per the guidelines i have solved first three…

Q: Sulfuric acid is a very important chemical and an indicator of a nation's industrial strength. World…

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Q: A. What is the order of the reaction with respect to acetone? B. What is the order of the reaction…

A: The reaction    Rate law is written as    Since acid is used as catalyst it appears in the rate law…

Q: Calculate the molar concentration of Ba2+ in saturated BaC2O4 solution. The pH was kept at 4.5. Ksp…

A: Given: pH = 4.5 Ksp of BaC2O4 = 1.0x10-6  Ka1 of H2C2O4 = 5.4x10-2 Ka2 of H2C2O4 = 5.42x10-5

Q: 4. Calculate the pH of a solution that is 0.0532 M in acetic acid and 0.0245 M in sodium acetate.

A: Given-> Concentration of acetic acid = 0.0532 M Concentration of sodium acetate = 0.0245 M

Q: 2. Iodine-131 is used medically for the diagnosis of thyroid illnesses. The rate constant for the…

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Q: Balance the reactions below using the change in oxidation number method. РЬО, + НBr РЬО + NH, KBr +…

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Q: What is the mass (in grams) of 25.00 L of propane vapor (C3H8) at STP? R= 0.08314 L·bar/mol · K.

A: Detail mathematical calculation is shown below

Q: 1. Gold-198 is used in the diagnosis of Ilver problems. If the half-life of Au-198 is 2.69 days: a…

A: Given-> Half life = 2.69 days Initial amount = 9.21 mg Time = 72.9 days

Q: A catalyst affects the rate of the forward reaction by changing which of the following? Activation…

A: Catalyst :-  A catalyst which increases the rate of chemical reaction without itself undergoing any…

Q: HO CN H30*, A е. CH;CH2OH f. HO. H* H3O* g. N- Ph3P OCH3 h.

A: We have to give the major products of the given reaction. (e) The required major products are shown…

Q: с. H2N° HO, SOCI2 (еxcess) N-CH3 CH3

A: Detail mechanistic pathway is given below to find out the final product

Q: several Ph. steps Br Please explain the mechanism and steps of the synthesis. Thank you!

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Q: ASSERTION: The random or zig-zag motion of the colloidal particles in the dispersion medium is…

A: The random or zig-zag motion of the colloidal particles in the dispersion medium is called as…

Q: Label the acid and the base on reactant side of the equations and write the products: 1. H,SO, +…

A: ->Acid reacts with base and form salt and water.

Q: In the reaction below, the Lewis base is BeCl2+2Cl^- BeCl4^2- A BeCk2 BBeCl4^2- C Cl D None of these…

A: Acceptor of electron pair is known as Lewis acid and Donar of electron pair is known as Lewis base.

Q: The acid-dissociation constant of hydrocyanic acid (HCN) at 25.0°C is 4.9 × 10-10. What is the pH of…

A: Given,  Concentration of the sodium cyanide (NaCN) solution = 0.080 M  Acid dissociation constant…

Q: 4 NH3(g)+7o2 4 no2 (g)+6 h2o (g) what is the correct expression for the pressure based equilibrium…

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Q: A Zn wire and Ag/AgCl reference electrode saturated with KCI (E = 0.197 V) are placed into a…

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