Q: شه-8 target
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Q: In a calorimeter, 150 mL of 0.5 mol/L barium chloride is mixed with 150 mL of 0.5 mol/L sodium…
A: Given-BaCl2 (aq) + Na2SO4 (aq) + 8.2 kJ → NaCl (aq) + BaSO4 (s) Volume of barium chloride…
Q: ement bers are used to remove sulfur dioxide gas produced during the combustion of coal; they are…
A: As per the bartleby expert guidelines, I am allowed to answer one question at a time. Please repost…
Q: 4. Which synthesis, starting from benzene, forms aniline (aminobenzene)? a. 1) HNO₂/H₂SO4 b. 1)…
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Q: 63. Ethanol is produced industrially by reacting ethylene gas with water. The balanced equation for…
A: C2H4 (g) + H2O (l) → C2H5OH (aq) Form this Balanced Chemical equation we get that ; 1 mol ethylene…
Q: The name of the compound shown here is
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Q: What will be the resulting products structure when 1-butanol is oxidized using pyridinium…
A: In this question we have to tell the product of the 1- butanol using PCC as mild oxidizing agent.
Q: What is the relationship between the two molecules shown below?
A: Both the molecules have the same molecular formula i.e. C6H12O6 but have different structural…
Q: Determine the volume (liters) of 0.500 M NaOH solution required to neutralize 1.50 L of 0.750 M…
A: In neutralization reaction, an acid reacts with a base, they neutralize each other to form a metal…
Q: OH−] = 1.5×10−2 M
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Q: Provide the major organic product of the following reaction. HCI 0 °C The reaction in the previous…
A: Here we are required to find the major product of the reaction
Q: 18.64 The following two compounds each exhibit two heteroatoms (one nitrogen atom and one oxygen…
A: According to the lewis acid base theory a substance which can donate electron called as base.
Q: (a) HO (b) H₂N Home (c) N (d) (e) (f) A H CI + CI OH-HO AICI3 +H HO. AICI3 H+ do H+ ОН H+
A: We have to give the major products of the given ring-forming reactions.
Q: Br HO H+ OH Br OF 1. PPh3 2. Buli ppms 2. H₂O, H+ H
A: This is a multistep reaction. In first step protection of carbonyl group occurred. In second step…
Q: 11. What type of stereochemistry is observed in the major product of a typical halohydrin formation…
A: -> Halohydrin is Compound in which there is halogen and hydroxide group at adjacent carbon .
Q: 1H and 13C NMR spectrum Identify the multiplicity of each signal in the given compound.
A: There is a formula for predicating the number of peaks base on the neighboring hydrogens and that is…
Q: At 280 K, a gas has a volume of 1.5 L, and a pressure of 1.0 atm. The gas is heated to 380 K, and…
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Q: Draw both resonance structures of the most stable carbonation intermediate in the reaction shown…
A: No alpha hydrogen increases the stability of carbocation increases.
Q: Provide the correct common name for the compound shown here. para- NO₂ CO₂H meta- ortho- 1,3,5- 1-…
A: The question asked for the common name of the given aromatic organic compounds.
Q: Which of the following alcohols is oxidized to a ketone by chromic acid?
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Q: What will be the resulting products structure when 2-methylcyclohexanol is dehydrated with 70% H2SO4…
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Q: A 1.2 kgkg block of iron at 33 ∘C∘C is rapidly heated by a torch such that 12 kJkJ is transferred to…
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Q: Explain the role of timescale of the experiment and the type of information you get from NMR.
A: role of timescale of the experiment. information what we get from NMR.
Q: Clare extracted GONG, an essential oil. Clare utilized steam distillation to extract GONG from the…
A: Temperature = 98.5 °C Vapor pressure of GONG = 5.06625 kPa Now, 1 kPa = 7.501 mm Hg 5.06625 kPa =…
Q: For each reaction, identify the Brønsted-Lowry acid, the Brønsted-Lowry base, the conjugate acid,…
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Q: 1. Methanol and ethanol are separated in a capillary GC column with retention times of 370 and 385…
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Q: For the reaction A(l) =A(g), the equilibrium constant is 0.333 at 25.0 ◦C and 0.666 at 75.0 ◦C.…
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Q: Post-Lab Questions: In a different experiment, a precipitation reaction was used to determine the…
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Q: An analytical chemist weighs out 0.066 g of an unknown monoprotic acid into a 250 mL volumetric…
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Q: Classify the amino acid depicted here in the form at physiological pH (~7.4). H3N+ H₂C HC CH₂ 010 C.…
A: Amino acids are the building blocks of protein. They contain carboxylic acid group as well as amino…
Q: (14) There are how many o bonds and how many bonds in N3 (N.B. the molecule is not cyclic)? You must…
A: Number of σ and π bond can be calculated from the structure of a molecule.
Q: Please answer the following questions: 1. The phenolphthalein HIn indicator forms this equilibrium…
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Q: 5. Draw the expected products (x3) for each reaction arrow: OH Br HO 1,2 ethanediol A & H3O+…
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Q: Consider these compounds: A. CaSO4 B. Zn(CN)2 C. CoCO3 D. Ag2SO4 Without doing any calculations it…
A: To check the solubility , we can compare Ksp values of the compounds. The compound whose Ksp value…
Q: What volume, in milliliters, of 14.6 M HCl is required to make 68.3 mL of 3.16 M HCl?
A: Given: Initial molarity of HCl = 14.6 M Final volume of HCl = 68.3 mL Final molarity of HCl = 3.16 M
Q: For the reaction below, complete the equation summary table. If an element has no change in…
A: Since, oxidation taken place when oxidation number increases, number of oxygen increases, number of…
Q: wRite the FORMula FOR OF the Follow TRINtRodiamme gold. (III) Calcium PENTAIodo di AQ40 (opponente…
A: Given name of the compounds are Trinitrodiaminegold(III) Calciumpentaiodoaquocopprate(I)…
Q: For the reaction below, complete the equation summary table. If an element has no change in…
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Q: Wilkinson's catalyst is used in the hydrogenation of alkenes as shown in the following catalytic…
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Q: We have a 1.000 M aqueous solution of C3H8O(aq) (C3H8O is the only solute). The density of this…
A: To solve this problem we have to first find the mass of solution , mass of solvent , mole of solvent…
Q: 18.62 Would you expect the following compound to be aromatic? Explain your answer.
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Q: Which product is obtained by the hydrobromination of following? 2-bromo-2-methylpentane…
A: Here we are required to find the major product of the reaction
Q: 7.7 g of H₂O Express your answer using two significant figures.
A: Given : mass of h2o = 7.7g Mass of Baso4 = 313 g We know Mole = given mass /…
Q: (a) (b-c) (d-e) (f-g) (h-i) (j-k) (l-m) (n-o) (p-q) (r-s) (t-u) FeBr3, Br₂ CH3 i AICI, NBS CC14,…
A: #(a): Br2/FeBr3 add -Br group to a benzene ring. Since -OCO-R (Ester) group is an activating…
Q: The standard cell notation for the following redox reaction is 2 Al(s) + 3 F₂ (g) → 2 A1³+ (aq) + 6…
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Q: What type of regiochemistry is observed in the major product of a hydroboration- oxidation reaction?…
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Q: Predict the ¹³C NMR chemical shift of the circled carbon in the structure below. H3C CH3 C CH3 CH3…
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Q: Write a possible mRNA sequence that codes for each peptide. Pro-Gln-Glu-Asp - Phe lle - Met-Lys -…
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Q: Provide the correct systematic name for the compound shown here. 72°F o 2- OH CH₂-CH3 trans- cis-…
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Q: Use the following information to answer the next question Some steps in the preparation of a…
A: 24. We have to prepare 1.00 L of a 1.25 mol/L solution of a sodium hydroxide (NaOH). We have to…
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- Briefly explain the principle behind the following techniques:(a) ion-exchange chromatography (b) gel filtration chromatography (c) affinity chromatography (d) Use three diagrams to illustrate the separation of three different proteins by thesemethods.(c) What is the minimum distribution ratio that permits removal of 99% of a solute from 50.0 mL of water with (i) two 20.0-mL extractions with an organic solvent; (ii) four 10.0-mL extractions with the organic solvent?16) Which of the following(s) is/are correct? I- Selectivity factor is the amount of time a solute spends in the stationary phase relative to the time it spends in mobile phase II- The retention time for an analyte is the time interval between its injection onto a column and its appearance at the detector at the other end of the column. III- Distribution constant is the ratio of the total solute concentration in the stationary phase to that in the mobile phase. A) I, II and III B) Only II C) I and III D) II and III E) Only III for GC2
- In chromatography, the compound that is least soluble in the mobile phase a) Travels the furthest away from the line of origin b) Stays closest to the line of originExplain the following (1) Column Chromatography(CC) (2) Paper Chromatography (3) Thin Layer Chromatography(TLC) (4) Gas Chromatography (GC)9. The water-soluble vitamins B₁ (thiamine hydrochloride), B₂ (riboflavin), B3 (niacinamide), and B (pyridoxine hydrochloride) are determined by capillary zone electrophoresis (CZE) using a pH 9 sodium tetraborate-sodium dihydrogen phosphate buffer or by micellar electrokinetic chromatography (MEKC) using the same buffer with the addition of sodium dodecyl sulphate. Detection is by UV absorption at 200 nm. CH₂OH pka 5.5 pka 9.7 ΝΗ -OH HOH₂C. N NH₂ pKa 3.6 NH₂ HO -OH Vitamin B3 (weakly basic) Vitamin B6 (weakly acidic) Vitamin B₁ (weakly basic) HO- CH₂OH Vitamin B₂ (weakly acidic) a The elution order when using MEKC is vitamin B3 (5.59 min), vitamin B6 (6.60 min), vitamin B₂ (8.82 min) and vitamin B₁ (11.22 min). Comment on the solubility of the B vitamins in the sodium dodecyl sulphate micelles? The sodium dodecyl sulphate micelles elute at 17.8 min. OH pka 9.0
- (a) In High Performance Liquid Chromatography (HPLC), the separation method is by partition of the solute (analyte) between the mobile phase and the stationary phase. Explain how this leads to separation of analyte mixtures; (b) Describe the structure and materials use in a typical column used for HPLC. Thereby explain why high pressures have to be used in HPLC; (c) Discuss how the need for high pressures also imposes requirements on the injector;Thin‑layer chromatography (TLC) can be used as a preliminary identification method for many amphetamine‑type stimulants (ATS). Using a 0.25 mm thick silica gel stationary phase and a 98.5:1.5 methanol:concentrated ammonia mobile phase, a spot was observed to have traveled 3.52 cm when the solvent front traveled 8.81 cm. What is the retardation factor (?F)for the compound that composes this spot?1.Which of the following correlations about the analyses of iodine and saponificationnumbers is/are incorrect?a. Alcoholic KOH: dissolve KOH to lipid sampleb. Hanus reagent: react with saturated lipid bondc. Reflux set-up: hasten reactiond. Blank titration: determine total mol of KOH2. A triacylglycerol (Sample X) was subjected to saponification analysis. 1.1 grams of thesample was refluxed with 5% alcoholic KOH and the refluxed solution was titrated with 17.2 mLof 0.44 M HCl titrant. The blank solution was titrated with 25.6 mL of the titrant.i. What is the saponification number of the sample? ii. Which of the following could be the identity of the sample? Show solutions pls a. Tripalmitin (MW: 807.3)b. Trilaurin (MW: 639.8)c. Triolein (MW: 885:4)d. Tristearin (MW: 891.48)
- Below is a chromatogram of a mixture of phenolic pollutants obtained from the analysis of a river water sample using HPLC reversed-phase chromatography. Based on this chromatogram, answer the following questions. (i) (ii) (iii) (iv) 0.01 TO 0.8 1.2 0". BEO - 2.0 1757 $122. 2.8 3.2 What is meant by 'retention time'? Calculate the capacity factor, k, for compounds 1 and 2. Calculate the selectivity factor, a, for compounds 1 and 2. Suggest two parameters (or factors) that may affect the selectivity factor, a, for the two compounds?(6)(Inorganic) In an ion exchange chromatography column, based on sulfonate groups, as shown in figure 1, an aqueous mixture of cations is injected: Li, Na and K. And it is observed as the Li ion, elutes first, followed sodium, and finally potassium, figure 2. Explain this retention order. Na* Li* INJ Fig.2 Fig. 1What are desirable properties of a gravimetric precipitate?
