A chromatographic procedure separates 2.0 mg of sample on a 4.6 i.d. x 150 mm column with a flow rate of 1.0 mL/min. What size column and flow rate are required to separate 500.0 mg of the same mixture?
Q: Which d orbitals are lowest in energy in a square planar complex? Select all that apply: dz2…
A:
Q: What is the molality of a solution containing 85.3 g of silver perchlorate dissolved in 932 g of…
A: Molality is defined as number of mole of solute divide by weight of solvent in kg molar…
Q: What is the likely product of the reaction shown? & OD) IV O None of these B) II H3O+ DAL OH OH you…
A: In the given reaction, acidic hydrolysis of epoxide occur to give di hydroxy product.
Q: Draw the alpha anomer of D-glucose.
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: nited States) (Question 18, 19, 20, 21) Drug A and B undergoes degradation reaction in solution.…
A:
Q: H HO HO HO HO HO H₂N-C-0-0- H₂N-C-0-0- H₂N-C-C-0- H₂N-C-C-0- H₂N-C-8-0 H₂N-C-C-0 H₂N-C-0-0- miflo…
A: Enzyme that hydrolyze protein are called proteases
Q: Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases are optional.…
A: A triprotic acid is a acid that contains three dissociable proton
Q: Consider the mixing of 25.00 mL of 0.0500 M Pb(NO3)2 with 25.00 mL of 0.0500 M NaCl and the…
A:
Q: . A 0.125-g sample of a monoprotic acid of unknown molar mass is dissolved in water and titrated…
A:
Q: Yo दू mCPBA 1) LIAIH, 2)H30 1) EMg Br 2) HO का का HBr -20°C HBr 80°C
A: The major products of the reactions are given below -
Q: A half cell containing a copper electrode immersed in a 1 M aqueous solution of CuSO4 is connected…
A:
Q: At a certain temperat equilibrium constant K for the following reaction is 5.41 x 10⁹: NO₂(g) +…
A:
Q: SO has several resonance structures. Consider one of these structures in which all the atoms follow…
A: Correct answer is The molecular geometry or shape of SO3 is trigonal Planar. It is exceptional case…
Q: Write the balanced equation for the neutralization reaction between H₂PO4 and NaOH in an aqueous…
A: A balanced reaction is the reaction in which number of atoms are same on both reactant as well as…
Q: How we can characterize the chemical composition of organic and inorganic nanostructures (suggest…
A: The main constitute particle present in an organic nanostructure is always carbon (C), hydrogen (H),…
Q: Determine the pH of a 0.095M hypochlorous acid solution given that the K₂=3.0 x 10 (EQ3.7)…
A:
Q: Problems 17.23 Calculate Kp for the following reaction at 25°C: mai aranetseit #ropoutsdi H₂(g) +…
A:
Q: Compute for the pH when a 25.00 mL of 0.1000 M HNO2 (47.01 g/mol; Ka = 4.5 x 10-4) was titrated with…
A: 25.00 mL of 0.1000 M HNO2 was titrated with 0.00 mL of 0.1000 M NaOH solution. The Ka of HNO2 is…
Q: any molecules are in 4.15 mol of SiH? ol SiH4 = any moles are in 7.83 x 1024 molecules of NH3? 1024…
A: Mole is equal to number of molecules divide by avagadro number
Q: Does sunlight affect uv vis spectrophotometer ? is this statement true? ''Sunlight can dim the…
A: Yes sunlight affect UV -Vis spectrophotometer. Yes this statement is true .
Q: Molecule or ion H₂O₂ HCN N₂0 BiCl²- XeF₂ Hybridization Hybrid Orbital Filling #o #π Sigma Bond…
A: hybridisation ,orbital diagram,orbital filling and sigma ,pi bond all these informations are given…
Q: Use the thermodynamic data given below to compute the formation constant, Kf for [Zn(NH3)4]2+ in…
A: Answer:- Firstly a balanced equilibrium equation is written then using given standard enthalpy vqand…
Q: Which of the following is the Ksp expression for the equilibrium reaction, M2X3(s) ⇌ 2M3+(aq) +…
A:
Q: 9. Indicate the products are formed when the following compounds react with ozone. b. C. P ~t
A: Ozonolysis of alkene gives aldehyde and ketones which depends on substrate.
Q: At 25 °C, what is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion…
A:
Q: what is the temperature when 20 grams of salt is added to boiling water
A: Boiling temperature is slightly raised by salt, but not significantly. Twenty grammes of salt will…
Q: Draw the major organic product formed in the reaction.
A: In the given reaction hydrogen bromide reacts with 1-phenyl-1,3-butadiene to give an addition…
Q: zero one two three produced required In the conversion of 1,3-bisphosphoglycerate to…
A: The concept used here us from Biomolecules chapter of organic chemistry. According to question Here…
Q: The boiling point of chloroform, CHCI,, is 61.700 °C at 1 atmosphere. K₁(chloroform) = 3.67 "C/m In…
A:
Q: Question 30 Select the most stable conformer of cis-1,3-cyclohexanediol. OH OD) IV o c) III 0 A) I O…
A:
Q: A student proposes the following Lewis structure for the isocyanate (NCO) ion. oft C Assign a formal…
A: Formal charge: The formal charge (FC) is the charge assigned to an atom in a molecule, assuming that…
Q: 1. A current of 4.84 A4.84 A is passed through a Cr(NO3)2Cr(NO3)2 solution for 1.10 h1.10 h. How…
A:
Q: Which half-reaction occurs at the negative electrode (cathode) if the cell is used for silver…
A: Silver plating is a process in which layer of silver metal is deposited on other metals.
Q: Which of the following solutions will show buffer properties? 100 mL of 0.25 M NaCH3CO2 + 150…
A: Answer:- For the given solution mixtures, the mixture which will have both acetic acid and acetate…
Q: Write the net ionic equation for the reaction when solutions of magnesium sulfide and copper nitrate…
A: Spectator ions do not participate in chemical reactions
Q: Liquid butane is used in cigarette lighters. The boiling point of butane at 1 atm pressure is -1.0…
A: Given: Initial temperature of butane (T1) = -1.0°C Initial pressure of butane (P1) = 1 atm Final…
Q: Use the previous example for the chemical reaction 2 HgCl₂(aq) + C₂O²(aq) → 2 Cl(aq) + 2 CO₂ (g) +…
A:
Q: How many mL of a solution of sodium sulfate 4M must you extract to prepare 57mL of a 1M solution in…
A: The molarity of sodium sulfate solution = M1 = 4 M The molarity of the sodium ions solution = M2 = 1…
Q: 17)Calculate the equilibrium constant, K, for the following reaction and concentrations. 2 NOCI (g)…
A: Equilibrium constant of a reaction written as , K = (Concentration of product)n(Concentration of…
Q: 47. Four solutions of unknown HCl concentration are titrated with solutions of NaOH. The following…
A: Given , HCI is titrated with NaOH solution.
Q: Arrange the conjugate acids of the following bases in increasing acidity.
A:
Q: 2. Consider the following electrochemical cell at 25°C given the thermodynamic constants below:…
A:
Q: Which of the compounds listed would be one of the final major products for the following reaction…
A:
Q: How many grams of NaOH are required to prepare 240. mL of a 3.50 M NaOH solution?
A: Molarity is one of the ways to represent the concentration of the solution. Here we are required to…
Q: The chemical formulae of some acids are listed in the first column of the table below, and in the…
A:
Q: Peak 1: 7.96 ppm Region from 8.0-7.3 ppm Zoomed in 2H Doublet 9 HR201102501MS 7.86 7.66 WZ 8 Peak 2:…
A: Analysis of sample through IR and NMR spectroscopy. Total 4 peaks appear in HNMR.
Q: 3. (a) Fill in the missing reagent and the product? CH3CH₂-CC-CH3 A ? CH3CH₂ (b) Provide the IUPAC…
A: Given that, (a) We have to give the missing reagents and products. (b) We also have to give the…
Q: 67. What volume of each solution contains 0.15 mol of KC1? (a) 0.255 M KC1 (b) 1.8 M KCI (c) 0.995 M…
A:
Q: For the following chemical reaction, predict the sign of the change in entropy (AS). 6Cl2 (g) +…
A: Entropy is a measure of the randomness of the system. The entropy change in a chemical reaction can…
Q: 111 O Calculating the mass of an electrolysis product from the applied... Correct Electroplating is…
A: Current= Charge/Time Charge = Current x Time 1 F = 96500 C/mol
A chromatographic procedure separates 2.0 mg of sample on a 4.6 i.d. x 150 mm column with a flow rate of 1.0 mL/min. What size column and flow rate are required to separate 500.0 mg of the same mixture?
Step by step
Solved in 3 steps
- Titration purity NxVx mEq weight weight of sample (g) x 100 Volume (Weight of sample (g) Nx mEw Weight V = 100 Normality Weight of sample (g) Vx mEw Weight N = 100 mEq Weight mEq Weight % x Weight of sample (g) V xN /100 Weight of sample Nx Vx mEq weight (9)= x 100 %3D % Purity Volume 2 Normality 1 Normality 2 Volume 1What are the advantages and disadvantages of volumetric and gravimetric analysis?What are the differences between systematic and random errors and how do they effect accuracy and precision? In what circumstances would you use standard addition (versus a normal calibration curve) to determine the amount of an analyte in a sample? A urine sample, containing analyte Z is analysed by the standard addition method where 5 mL of the original sample was mixed with increasing amounts of a Z standard and each solution diluted to a volume of 50 mL prior to analysis. A plot of the final concentration of the standard in each of the 50 mL samples (x axis) versus The measured signal from the analysis of each 50 mL sample (on y axis) produced a straight line with the general equation: y = 44.72x + 4.06 what was the final concentration of Z in the 50 mL standard addition sample? what was the initial concentration of Z in the original urine sample?
- Internal standard (As , Cs ), analyte with known concentration (Ax , Cx ) In a chromatographic equipment, a solution containing 0.006727 X and 0.008331 M S give peak area of Ax= 2316 and As= 207. To analyze an unknown sample, 5.0mL of 0.008331M S was added to 5.0mL of X, and the mixture was diluted to 50.0mL. This mixture gave a chromatography spectrum with area Ax= 3206 and As= 200. Find Cx.For a concentration technique, Stotal is given as 19.31 ± 0.035, Smb is 0.22 ± 0.008, and kA is 0.154 1 0.007 ppm, where Stotal is the signal, kA is the method's sensitivity for the analyte and Smb is the signal from the method blank. If we want the absolute percent uncertainty of the concentration CA to be 2.6%, which statement is false below? (Hint: refer to sections 4B.1 and example 4.7 in your textbook) We must improve the uncertainty in KA to 10.004 ppm-¹. O Uncertainty in the method's sensitivity dominates the absolute uncertainty. O Improving the signal's uncertainty will improve the absolute uncertainty.ASSAY Calibration solutions Calibration solutions of naproxen in the range 5 – 25 μg/mL were prepared. Sample preparation 20 tablets weighing 12.3819 g were crushed to a fine powder. A portion of the powder (145.4 mg) was shaken with approximately 150 mL of acetic acid (0.05 M) for 5 min and then made up to volume in a 250 mL volumetric flask (stock solution). Approximately 50 mL of the stock solution was filtered and a 25 mL aliquot was diluted to 100 mL in a volumetric flask. 10 mL of the resulting solution was further diluted to 100 mL with acetic acid (0.05 M). Analysis The standards and sample solutions were analyzed by HPLC under the following conditions: Column: octadecylsilyl (ODS), 4.6 mmx150 mm, mobile phase: acetonitrile : 0.05 M acetic acid (85:15), flow rate: 1 ml/min, UV detection at 243 nm. Results: A calibration curve of concentration versus peak area was constructed for the standard solutions and gave the straight-line equation: y = 3555.6x + 85, r = 0.9999 The area…
- Suppose you have a 11.4 cm long chromatography column with an inner diameter of 5.47 mm that is packed with a stationary phase that occupies 66.0% of the volume. What is the linear flow rate, ux, in centimeters per minute, if the volumetric flow rate, F, is 1.98 mL/min? Ux = cm/min How long will it take, in minutes, for the solvent to pass through the column? min tM = What is the retention time, in minutes, on this column for a solute with the retention factor, k, of 11.0? min tR = %3DExplain the difference between random sampling and haphazard sampling as used in Analytical chemistry.A method for the determination of the corticosteroid methylprednisolone acetate in solutions obtained from pharmaceutical preparations yielded a mean value of 3.7 mg mL with a standard deviation of 0.3 mg mL. For quality control purposes, the relative uncertainty in the concentration should be no more than 3%. How many samples of each batch should be analyzed to ensure that the relative standard deviation does not exceed 9% at the 95% confidence level? samples
- [References) A method for the determination of the corticosteroid methylprednisolone acetate in solutions obtained from pharmaceutical preparations yielded a mean value of 3.7 mg mL with a standard deviation of 0.3 mg mL. For quality control purposes, the relative uncertainty in the concentration should be no more than 3%. How many samples of each batch should be analyzed to ensure that the relative standard deviation does not exceed 9% at the 95% confidence level? samplesA titrimetric method for the determination of calcium in limestone was tested with the analysis of a NIST limestone containing 30.15% CaO. The mean of the four analyzes is 30.26% CaO with a standard deviation of 0.085%. From the data accumulated from many analyzes, s→ϭ=0.094% CaO was found.a) Do the data indicate the presence of systematic error at the 95% confidence level?b) When a value for ϭ is unknown, do the data show a systematic error at the 95% confidence level?A titrimetric method for the determination of calcium in limestone was tested by analysis of an NIST limestone containing 30.15% CaO. The mean result of four analyses was 30.26% CaO, with a standard deviation of 0.085%. By pooling data from several analyses, it was established that s = 0.094% CaO.a. Do the data indicate the presence of a systematic error at the 95% confidence level?b. Do the data indicate the presence of systematic error at the 95% confidence level if no pooled value for s was available?
