Q: Why is it easier to see all three pKa values in a tripolic acid but not all 3 equivalence points?
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Q: (BFN = (8)F0÷ + (3%OS= (3FOS NO(g) 50(g) AH° = -90.2 kJ (a) (b) AH° = +98.9 kJ Using Le Chatelier's ...
A: Exothermic reaction are those in which heat is released and endothermic reaction are those in which ...
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Q: As the pka of an acid increases, the acid will be: O Stronger O Weaker O Converted to basic solution...
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Q: Consider the following system at equilibrium where H° = -108 kJ, and Kc = 77.5 , at 600 K: CO (g) +...
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Q: the initial pH Consider the titration of a 38.0 mL sample of 0.170 M HBr with 0.200 M KOH . Determin...
A: Since you have asked a question with multiple subparts, we will answer only first 3 subparts for you...
Q: 29. If two sp? hybridized orbitals are going to overlap, what is the expected molecular geometry? A....
A: Hybridization is process of mixing of atomic orbitals of different energy to give a new set of orbit...
Q: 21. An orbital which does not exhibit symmetry along the internuclear axis: A. Sigma orbital B. Pior...
A: 21 ) A sigma bond is formed by the head to head overlap of orbitals and a pi bond is formed by the ...
Q: According to the following reaction, how many grams of ammonium nitrite are needed to form 25.8 gram...
A: Given, Ammonium nitrite (aq) ➝ nitrogen (g) + water (l) mass of water (H2O) produced = 25.8 g mass o...
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Q: coffee-cup calorimeter, 100.0 mL of 1.1 M NaOH and 100.0 mL of 1.1 M HCI are mixed. Both soluti...
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Q: Calculate the amount of lime required for softening 50,000 litres of water containing: H÷=1.5 ppm, H...
A: Composition of hard water sample : H+ = 1.5 ppm HCO3- = 396.5 ppm Mg2+ = 42 ppm Ca2+ = 90 ppm FeSO4....
Q: A 30.25g sample of solid copper at 82 degrees Celsius is added to a cup with 50g of water at 21.1 de...
A: Given, For copper (Cu) mass of Cu (mCu) = 30.25 g Specific heat capacity of Cu (CpCu) = 0.386 J/g°C ...
Q: XeF4 is a square planar molecule that has 9 vibrationalmodes. How many degrees of freedom does this ...
A: Solution - According to the question - the degrees of freedom of a particle may be defined as the nu...
Q: What is the entropy when 1.35 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]
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Q: Which solvent would have a higher reaction rate for SN2? ethanol acetone
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Q: Balance the following chemical equation by using matlab: P bCrO4 + HCI + F ESO4 → P bC12 + Cr2(SO4)3...
A: In balanced chemical equation number of atoms of each species are equal on both reactant and product...
Q: A Chemistry 20 student performs a diagnostic test on the following substances in solution to determi...
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Q: (Pages 817 - 822). S Ksp 0.25 Calculate the molar solubility of CuX (for which Ken = 1.27 x 10-36) i...
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Q: What is the concentration of OAc- in a 0.6M Acetate buffer, pH 7? (pKa for Acetic acid is 4.77)
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Q: 1. Calculate the mass of methane (CH4) combusted when 2500 kJ of en- ergy is released according to t...
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Q: Part A: A gas system has pressure, volume and temperature of 0.72 atm, 9.93 L and 17 °C, respectivel...
A: Part A - - > Given - P = 0.72 atm V = 9.93 L T = 17°C = 17+273.15 = 290.15 K n=? R = 0.0821 (L.at...
Q: Part I. Choose the stronger acid in cach pair of compounds. 1. H,Se and H,S 2. H&P and H,S 3. HBГО, ...
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Q: A gas sample at a certain pressure and absolute temperature occupies a volume of 0.5 L. If the tempe...
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Q: The figures below represent equilibrium mixtures of reactants and products for 4 different reactions...
A: Higher the product concentration than the reactant concentration then larger the equilibrium constan...
Q: 0.750 mol of N, and 1.20 mol of H, are placed in a 3.00 liter container. When the reaction-N2(g) + 3...
A: To find the concentration of species at equilibrium, we need to create ICE table.
Q: If a reaction requires species X and species Y in order to proceed, will it proceed in the absence o...
A: For the reaction to occur, the following factors are important: (i) Collision of molecules. (ii) The...
Q: The reaction NH4SH(s) = NH3 (g) + H2S(g) has K, = 0.10 at 27°C. What is the minimum amount of NH4SH ...
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Q: 4. Write the major product(s) for each of the following reaction or sequence of reactions and draw t...
A: Here we have to write the major product formed in the following sequence of reactions with mechanism...
Q: • Part A Dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. T...
A: Given: The decomposition of dinitrogen pentoxide to nitrogen dioxide and oxygen gas is a first-order...
Q: If a sample of iron(III) sulfide contains 5.00x10^15 iron atoms, what is the mass of the sample in g...
A: Given, No. of Fe atoms = 5.00×1015 atoms of Fe molar mass of Fe2S3 = 207.9 g mol-1 mass of Fe2S3 = ...
Q: Consider the reaction below: CACO:(s) → CaO(s) + CO2(g) If we have an equilibrium mixture of reactan...
A: Given the reaction is, CaCO3(s)<---‐---> CaO(s) + CO2(g)
Q: Consider this reaction: 2N,0, (e) - 2N,0, e+0,e) At a certain temperature it obeys this rate law. -(...
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Q: For a first-order reaction, a straight line is obtained from a plot of In(t) versus [A] [A] versus t...
A: For a first-order reaction, a straight line is obtained from a plot of ---
Q: The hot metal piece weighing 2.500g at 100.0°C is dropped into 40.0 mL water at 20.0 write your.answ...
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Q: (a) Complete the Lewis structure for the molecule shown below. How many lone pairs are there? エー H-c...
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Q: For 2-methylbutane, the ∆H° of vaporization is 25.22 kJ/mol and the ∆S° of vaporization is 84.48 J/m...
A: Given: The ∆H° of vaporization for 2-methylbutane = 25.22 kJ/mol The ∆S° of vaporization for 2-met...
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A: Let us discuss thus question one by one.
Q: Lipase, H2O, heat NaOH, H2O, heat o
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Q: tion Page 3 of 3 Previous Next Part 2. Determination of Orbital Hybridization. Determine the hybridi...
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Q: ture of krypton and argon gas is expanded from a volume of 37.0 L to a volume of 47.0 L, while the p...
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Q: Calculate the normality of a 22.5mL sample of H2SO4 if the volume of 1.1055N NaOH used in the standa...
A: Given, Volume of H2SO4 = 22.5 mL Molarity of NaOH = 1.1055 N Volume of NaOH = 20.70 mL
Q: A chemist adds 0.35 L of a 0.132M barium chlorate (Ba(Clo, solution to a reaction flask. Calculate t...
A: Given:: Molarity = 0.132 M volume = 0.35 L no. of moles = ?
Q: 7. What is the major organic product formed from each of the following reactions? a. HS04 он 1. NaOH...
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Q: 3. What is the molar concentration of nitric acid (63.0 g/mol) in a solution that is 68.10 % HNO3 (w...
A: Given that, Molar mass of HNO3 = 63.0 g/mol percentage of composition of solution = 68.10 % Specific...
Q: Use the equation:p4 (s)+5O2(g)->P4O10(g) a) if 2.50g P4 are reacted in a flask containing 750mL O2 a...
A:
Q: Consider the dissolution of CaCl2 : CaCl2 (s) → Ca2+ (ag) + 2 C1-(ag) AH = -81.5 kJ An 11.7-g sample...
A: ΔH = -81.5 kJ of 1 mol CaCl2 Molar mass of CaCl2 = 110.98 g /mol Moles of CaCl2 present in solution...
Q: B) Sample Problem: A chemist prepares a solution by dissolving .8 mole of NaOH in water to give a 50...
A: Answer of the question given below,
Q: According to the following reaction, how many grams of ammonium nitrite are needed to form 25.8 gram...
A:
Q: Repeat unit Explain why the polymer is appropriate for its use. Include the properties the polymer e...
A: Answer - Polypropene - Use - It is used in a variety of applications to include packaging for cons...
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- Provide an explanation of the effects which are responsible for the three absorbances profile in relation to the height of the burner. Figure below shows the absorbance profile of the three elements.Which of the following is NOT a detector used with HPLC? evaporative light-scattering detector refractive index detector ultraviolet detector electrochemical detector thermal conductivity detectorState the difference between transmittance, absorbance, and molar absorptivity. Which one is proportional to concentration?
- Why should absorbance be less than 2? Please explain in terms of light transmittanceThe logarithm of the molar absorptivity of acetone in ethanol is 2.75 to 366 nm. Calculate the range of acetone concentrations that can be worked on if The transmittance percentage must be greater than 10% and less than 90% %, measured in a cell with an optical pitch of 1.50 cm.In general, we want to have absorptions less than or equal to 1. What percentage of the incident light is transmitted when absorption is 1? Report your answer to the nearest whole number. Do not include the percent sign in your answer.
- Calculate % transmittance if 85% of light was absorbed by an analyte sample in an UV-Vis spetrophotometric experimentWhat causes exposure or closeness in humans: [Explain in detail and thenjustify why]a) to an IR lamp?Using words and/or pictures and/or equations, explain how the use of a deuterium (D2) lamp can correct for spectral interference in flame atomic absorption spectrophotometry (background absorption/scattering by non- specific absorbers).
- What is the design of figure II? FT IR interferometer single beam spectrophotometer diode array spectrophotometer double beam spectrophotometerWhat are the parameters that can be used for analytes identification and quantification using Cyclic Voltammetry, respectively?It is usually recommended to clean the glass surfaces of a refractometer with ethanol or isopropyl alcohol rather than acetone or water. Why?
