Which type of chromatography is paper chromatography? a. Liquid-liquid chromatography b. Liquid-solid chromatography c. Reverse-phase chromatography d. Normal phase chromatography Column chromatography f. Planar chromatography

Q: 24 of 34 How many grams of HBr are dissolved in 3.50 L of a 0.500 M solution? B 141 g A 80.9 g D 142…

A: Given that: Molarity of HBr = 0.500M = 0.500mol/L Volume = 3.50L  Molar mass of HBr = 81 g/mol

Q: Identify the product of the reaction of ethyl formate with excess CH₂MgBr. Select one: O a. ethanal…

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Q: d) The following data was obtained from the determination of lead, Pb in a wastewater sample. Four…

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Q: A vessel containing 1.000 kg of water at 25.00 °C is heated until it boils. How much heat is…

A: Given: Amount of water = 1.000 kg Initial temperature of water = 25.00 oC Boiling point of water =…

Q: Classify each of these molecules as alcohol, aldehyde, ketone, carboxylic acid, amine, or ether:

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Q: Once upon a time, Tricia and her sister Jillian are doing titration to assess the molarity of the…

A: The first method used is the pH strip method and the 2nd method used is the titration method.  The…

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Q: Which of the following is the most stable conformation of compound A? ОН A: но- OH OH да са на НО.…

A: When we draw chair form of cyclohexane ,we should keep some rules in our mind. The group represented…

Q: Classify these alcohols as primary (1°), secondary (2°), or tertiary (3°). 1° 2° Answer Bank CH3…

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Q: Write the following organic compound in CONDENSED FORM (SHOW ALL THE NUMBERS OF ATOMS IN EACH…

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Q: iv) The correct molecular formula of Sulfurous acid is.................... a. H₂SO4 b. HNO3 c. H₂SO3…

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Q: Instruction: Write the following organic compound in CONDENSED FORM (SHOW ALL THE NUMBERS OF ATOMS…

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Q: What is the concentration of CN- (M) in the 50.0 mL sample?

A: Given, The 10 mL initial aliquot has been diluted to 25 mL. The final concentration of CN- in this…

Q: Put C4H10 through a combustion reaction... and for this reaction, how many liters of CO2 will be…

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Q: Draw Thompson's Model of atom

A: Thomson model of the atom is similar to that of a christmas pudding. The electrons embedded in a…

Q: Instruction: Write the following organic compound in CONDENSED FORM (SHOW ALL THE NUMBERS OF ATOMS…

A: Nomenclature  Find longest carbon chain (parent chain ). This chain is numbered such that the…

Q: Which of the following statements is INCORRECT? a. Amines are electrophilic. Amines are stronger…

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Q: Instruction: Write the following organic compound in CONDENSED FORM (SHOW ALL THE NUMBERS OF ATOMS…

A: The correct answer is given below

Q: Propose a structure for a compound with the formula, C4H7ClO2, that has the following IR and 1H NMR…

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Q: Which of the following statements is correct? a. The geometry of R₁(CO)R₂ is trigonal planar. O b.…

A: Since there are two question so I am solving one question if you want to solve another question…

Q: 2.Which of the following sugars can be a substrate for hexokinase? a.glucose b.fructose c.mannose…

A: Q1 D  Q2 C

Q: Complete the following statements about solutions: (a) pOH > 7; solution is O acidic о basic O…

A: pOH is a criterion for measuring the hydroxide ion concentration in the solution. It is used to…

Q: Name the following compounds based on their stock and classical method Stock Method Classical Method…

A: There are different type of compounds which have different names depending on the name of cations…

Q: What compound will be produced hen benzoic acid and ammonia are mixed together? Select one: O a.…

A: Benzoic acid react with ammonia to form ammonium benzoate , which on heating gives benzamide.

Q: 6. What does a low retention factor imply in the analysis? he pigment of interest is well carried by…

A: Here, multiple questions are given. As per Bartleby guidelines, I am allowed to answer one question…

Q: 82. Danny is being careful in handling acids in the laboratory. In diluting acids, she puts the…

A: Reaction of acid with water is exothermic which is vigorous in nature. So, its necessary to add…

Q: Glyceryl tricaprate (or tricaprin) is a triacylglycerol used in foods, drugs, and cosmetics as an…

A: Given,

Q: A chemist wanted to obtain pure water from an impure sample using simple distillation. The…

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Q: True or false:

A: 1.False cis-[PtCl2(NH3)2] has +2 oxidation state 2.True

Q: 14 14 7.6C7N+ O 0 1.H O 0 le 0 -le 14 IN O

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Q: 15. What is the AH of the reaction KS K+S? K+S →KS AH = +32.5 kJ KS+ K→ K₂S AH +38.2 kJ - O-32.5 kJ…

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Q: (i) Pt(s) + 2 NH3(aq) + 2 CI ( (aq) cis-[PtCl₂(NH3)2](aq) + 2 e¯ E° = 0.274 V The likely cathodic…

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Q: 3. Identify the chemical name and formulas of the following substances: Common Name Chemical Name…

A: While writing the chemical name of a substance, we follow certain rules. While naming inorganic…

Q: a) State two reasons why the front door of the balance is closed during weighing.

A: Since you have posted multiple questions, as per guidelines we will solve only the first one for…

Q: the mathematical expression of Ksp of calcium (II) of phosphate is: Select one: O a. Ksp [Ca²+1³…

A: The equilibrium between the soluble ions and insoluble salt can be described by the solubility…

Q: Which of the following statements is INCORRECT about the difference in the physical properties of…

A: 1.option c Butanone and 2-pentanone is soluble in water as hydrogen bonding. Butanone has lower…

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A: According to the ideal gas equation  PV = nRT  We can see that number of moles is inversely…

Q: I. Calculate pH from the following hydrogen ion concentration (M). Identify each as an acidic pH or…

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Q: AuBr(s) + 2 CN– (aq) ⇄ [Au(CN)2]– (aq) + Br– (aq)   Given: Keq = 2.02 x 1033 Ksp for AuBr is 9.8 x…

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Q: b) Compound G (C₂H₂O) is a carbonyl compound that will give a negative test towards Tollen's…

A: Given in following question a compound G C4H8O ia carbonyl compound this compound give a negative…

Q: IR Spectrum (KBr disc) 4000 100 80 60 40 20 40 13C NMR Spectrum (50.0 MHz, CDCI, solution) % of base…

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Q: (Chloromethyl)oxirane (epichlorohydrin); furoic acid is ........... heterocyclic compounds…

A: All the given heterocyclic compound finds many uses in day synthesis chemistry and further day to…

Q: The solubility of CuCl(s) is higher in an aqueous solution of NaCN than in pure water. true or…

A: Answer - True Explanation - According to the question - The solubility of CuCl(s) is higher in an…

Q: Solve for the dissolved oxygen content of the water sample in Day 1 if the Na2S2O3 titrant (0.1152…

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Q: Which of the following electrodes will not exhibit a Nernstian response based on the slope of the…

A: The Nernst equation is represented as: Ecell=E°cell-59.2 mVnlogPR where, Ecell is the cell…

Q: A student doing the colligative properties experiment was curious to try using 3.00 m of the NaCl…

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Q: 1. Is external force present to influence the analysis? Yes or No? 2. If the solvent is chloroform,…

A: TLC is a good tool for the separation of the sample mixtures. In this technique, the sample will…