If the initial amount of Fe(NO3)3 transferred to the cuvette is 0.046 mol, and the absorbance measurements indicate that 0.016 mol of FeSCN2+ are present at equilibrium, what must be [Fe³+] at equilibrium? The total volume of solution in the cuvette is 3.111 mL. Provide your response to two digits after the decimal.
Q: Assign the resonances in Figure 40.8 to specific protons inmethyl benzoate. (benzene ring attached…
A: 1H NMR spectroscopy gives an idea of number of sets of non equivalent protons and the arrangement…
Q: How many atoms of nitrogen are present in 22.50 grams of oxapyrazon?
A:
Q: Types of Error; Propagation of Uncertainty from Random Error You prepare an NH3 [FM 17.030 5 (±0.000…
A: Given: NH3 [FM 17.030 5 (±0.000 2)] 7.36 (±0.03) mL of a 28.00 (±0.05) wt% NH3 solution final…
Q: 6. A solution prepared from 0.3 g of an unknown nonvolatile solute and 30 g CC14 has a boiling point…
A: Here, elevation of boiling point occurring, when we add a non volatile solute to a solvent and the…
Q: Benzene has a boiling point of 80.1 °C, and a specific heat capacity of 1.8 J/g °C in the liquid…
A: we have to calculate the heat released when benzene is cooled from 114 degree C to 55.1 degree C
Q: how many lone pairs of electrons and total number of hydrogen atoms are in this strucutre? +
A: The given compound is 1-methyl cyclohexane carbocation. We know that carbon is tetravalent in nature…
Q: can you pleease show the mathematica working?
A: In this question, we have to find the greatest volume preceding the question given.
Q: Wine goes bad soon after opening because the ethanol (CH₂CH₂OH) in it reacts with oxygen gas (O₂)…
A:
Q: On the figure below, sketch the correct location of the thermometer bulb during a miniscale…
A: DISTILLATION:- DISTILLATION IS PROCESS USED TO SEPRATE TWO LIQUID ON THE BASIS OF THEIR BOILING…
Q: cobalt(II) phosphate octahydrate Express your answer as a chemical formula.
A: The given compound is cobalt(II) phosphate octahydrate.
Q: Gaseous methane (CH₂) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…
A: Using mole concept easily determines how much moles of reactants are used and how much moles of…
Q: How many kJ of energy is produced* during the formation of 74.2 g of Fe, according to the reaction…
A:
Q: From your data in Part 1 of the experiment, you calculate the natural log of the partial pressure of…
A: Given data :
Q: STARTING AMOUNT On average, a drop of water has a volume of 62.1 microllers What is this volume in…
A: In this question, we have to convert the given volume of one drop of water from microliters to…
Q: What is the mass, in grams, of 9.34 x 1024 molecules of methanol (CH3OH) ? mass: g
A:
Q: silicon by mass. How much oxygen will 10 g of silicon combine with?
A: 1 mol contain 6.022 × 1023 atoms.The mole is an SI unit used to measure the amount of any substance.…
Q: =C H-H CH₂C=C-HH-O: Question 4: Draw the products of each reaction. Use the pKa table in Appendix A…
A:
Q: P15.29 The smallest observed frequency for a transition between states of an electron in a…
A: Please find your solution below : In quantum mechanics, particle in one dimensional box describes…
Q: Upload a drawing of a graph showing the change in potential energy (on the y-axis) as two molecules…
A: First of all both the fluorine and chlorine molecules consist of highly electronegative atoms of…
Q: The vapor pressure of liquid aluminum is 400 mm Hg at 2.59x10³ K. Assuming that its molar heat of…
A: Given data The initial vapor pressure of the liquid aluminium is P1= 400 mm Hg The initial…
Q: hich compound(s) exhibit only London dispersion intermolecular forces? Select all that apply.) KrCl2…
A: Hydrogen bonding exist etwen hydrogen and most electronegative atom such as oxygen, nitrogen ad…
Q: The concentration this concentration of Tetrachloroethylene in water is 3 mg/L. Express in mol/1,…
A:
Q: m³ MOUNT An atom of a particular element has a volume of 6.1 x 1001 volume in cubic nanometers (10)³…
A: Given, the volume of an atom of a particular element = 6.1*10-31 m3 We have to convert this volume…
Q: How much heat was absorbed (in J) if a 10.0 g sample of an alloy with a specific heat of 0.107 J/g…
A:
Q: How many H-NMR signal can be detected in this molecule?Draw the H-NMR graph please.
A: Aromatic protons appears in the aromatic region near 7.40 ppm. This is symmetric compound.
Q: Solutions of hydrogen in palladium may be formed by exposing Pd metal to H₂ gas. The concentration…
A: Given - mass of hydrogen gas = 0.85g Mass of palladium = 197 g Density of…
Q: The osmotic pressure of 0.010 M solutions of CaCl₂ and urea at 25°C are 0.605 atm and 0.245 atm, re-…
A:
Q: A mixture of 0.05087 mol of C₂H4, 0.08092 mol of N₂, 0.06764 mol of NH3, and 0.0 848 mol of C6H6 is…
A: First , calculate the number of moles of each gas at equilibrium and then their sum, that is total…
Q: Give the structure that corresponds to the following molecular formula and ¹H NMR spectrum:: CH₁60:8…
A: 1H-nmr spectra provides the hydrogen environment of the unknown compound. The splitting of nmr…
Q: 0 Calculate the number of atoms in a 8.35 x 103 g sample of aluminum. number of atoms: x10 TOOLS…
A:
Q: ehyde OH benzyl alcohol throcon anthracene chlorobenzene n molecule would you expect to have the…
A: Rf value can be defined as the distance equal to the distance travelled by a compound divided by the…
Q: solvent BP = 101.85 OC Table 13.6 Molal Boiling Point Elevation and Freezing Point Depression…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: A oxygen with one single bond and three lone pairs is a neutral oxygen an oxonium ion with formal…
A: An oxygen atom has atomic number equal to 8.
Q: ОН
A: The naming of an organic compound can be done with help of rules of international union of pure and…
Q: What is the purpose of chemically staining a TLC plate using iodine vapor? To increase the Rf…
A: TLC — thin layer chromatography It is used to identification and purification.
Q: Why do you have to cover the beaker while the solvent is moving up the paper?
A: This question is based on the chromatography.
Q: At room temperature, hydrogen can be compressed to very high pressures without liquefying. On the…
A: CRITICAL TEMPERATURE=> Critical temperature is the value of maximum temperature at which a gas…
Q: A certain first order reaction has k = 2.51 s-1 . If the initial concentration of the reactant is…
A: Given that The first order rate constant k = 2.51 s-1 . the initial concentration of the reactant =…
Q: Q14. A 15.5g thin strip of iron is immersed in a solution containing 21.0g of copper (II) sulphate,…
A:
Q: 3. Using the data at right: a. Calculate the absorbance of each sample. You will need to express the…
A: We need to calculate the absorbance for each standard concentration and then plot the absorbance vs…
Q: 1. Provide a structure consistent with the following data: 3H 2H 2.5 ppm 2H 2H 1.5 Mass Spec…
A: 1Hnmr provides the information of the possible proton environments of the unknown compound. Mass…
Q: 1. You want to maintain pH-7.0 for an enzyme-catalyzed reaction that will produce hydroxide ions…
A: Henderson equation is pH = pKa + log [salt][acid] for maximum buffer capacity, pH = pKa and [salt]…
Q: Draw the tripeptide HIS at pH-13. Label each peptide bond
A:
Q: For the following proton-transfer reaction, identify the correct curved arrow mechanism. 1 11 III IV…
A:
Q: Calculate the number of formula units of calcium phosphate produced when 19.50 grams of calcium…
A: Given that, 19.50 grams of calcium fluoride reacts with excess of iron (II) phosphate We need to…
Q: + CHO NaOH сизон Bno H₂, Pd/c CH3OH PDC DMF + 4(CH3) Cu H30 COOCH3 5002 242612 1₂ N TLAR H₂, H₂O
A: c) The conversion involves aldol condensation reaction and addition of Gilman reagent.
Q: Help answer this
A: In an atom, there is nucleus at the centre and electrons are revolving around it. electrons are…
Q: When is the transition state's structure/geometry expected to be close to the reactant's structure?…
A: In this question we are asked to answer in which type of reaction (exothermic/endothermic) the…
Q: IF 25.5mg of tricthy/ methanol is produced when 0.100mL of Methyl propanoate and 0.2009 Of ethyl…
A:
Q: Consider the following ions: NO2−NO2−, CO32−CO32−, and ClO4−ClO4−. For each of these, you should use…
A: We have to draw the Lewis structures of the given ions that satisfies the octet rule. Also, we have…
Give a clear handwritten answer with explanation
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- Mixing the chelating reagent B with Ni(II) forms the highly colored NiB22+, whose solutions obey Beer’s lawat 395 nm overa wide range. Provided the analytical concentration of the chelating reagent exceeds that of Ni(II) by a factor of 5 (or more), the cation exists, within the limits of observation, entirely in the form of the complex. Use the accompanying data to evaluate the formation constant Kf for the process Ni2++2BNiB22+The accompanying data (1.00-cm cells) were obtained for the spectrophotometric titration 10.00 mL of Pd(II) with 2.44 10-4 M Nitroso R(O. W Rollins and M. M. Oldham, Anal. chem .,1971, 43, 262, DOI: 10.1021/ac60297a026). Calculate the concentration of the Pd(II) solution, given that the ligand-to-cation ratio in the colored product is 2:1A standard solution was put through appropriate dilutions to give the concentrations of iron shown in the table that follows. The iron(II)-1,10-phenanthroline complex was then formed in 25.0-mL aliquots of these solutions, following which each was diluted to 50.0 mL. The following absorbances (1.00-cm cells) were recorded at 510 nm: Calculate the concentration, in ppm, of a sample with an abosrbance of 0.829. Fe(II) concentration (ppm) A510 4.00 0.160 10.0 0.390 16.0 0.630 24.0 0.950 32.0 1.260 40.0 1.580
- Ammonium iron(II) sulfate crystals have the following formula: (NH4)2SO4.FeSO4.nH2O . In an experiment to determine n 8.492g of the salt were dissolved and made up to 250cm^-3 of solution with distilled water and sulphuric acid. A 25.0cm^-3 portion of the solution was titrated against 0.0150 mol dm^-3 KMnO4. A volume of 22.5cm^-3 was required. Find the value of nAssess the validity of each statement and choose X if the statement is CORRECT, Choose Y if otherwise. 10. Potentiometric methods can be used for end-point detection in EDTA titration of metal ions for which ion electrodes are available 11. Back titrations are useful for determining cations that are able to form stable EDTA complexes. 12. Nitriloacetic acid is an aminopolycarboxylic acid. 13. A ligand that has a single donor group is unidentate such as glycine. 14. Ammonia is a bidentate ligand. 15. The term chelate is derived from a Greek word meaning, toothlike projections3. An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation. After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask, and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation ofthe end point was equal to 13.03 mL. Based on this information,a) Outline the two steps involved, representing the related reactions./5b) Calculate the concentrations of CaCO3 and MgCO3 present in the initialsolution./6c) Calculate the masses of CaCO3 and MgCO3 present in the pellet./6d) Calculate the…
- Aluminium (III) reacts with the Chelating agent HL to give a complex AlL3 that is readily soluble in CHCl3. A spectrophotometric study shows that when a 1.77 x10-4 M aqueous solution of aluminium was extracted with CHCl3 containing 0.01M HL, the analytical concentration of aluminium at pH 4.5 in the two phases were 1.5 x 10-4 M [Al3+]upper) and 2.73 x10-5 M ([AlL3]lower) . What is the distribution coefficient at pH 4.8.A second calibration standard solution of an iron(III) salicylate complex was prepared in two steps. First, 10.0 mL of a 0.100 M stock solution was added to 90.0 mL of solvent to make 100.0 mL of the first calibration standard solution and, secondly, 80 mL of that first calibration solution plus 20.0 mL of solvent were mixed to make the second calibration standard. What is the concentration of the second calibration standard solution?10-mL aliquots of an environmental water sample were pipetted into five 50.00-mL volumetric flasks. Exactly 0.00, 5.00, 10.00, 15.00, and 20.00-mL of a standard solution containing 11.1 ppm Fe3+ were added to each, followed by an excess of thiocyanate ion to give the red complex Fe(SCN)2+. After dilution to volume, the instrumental response for each of the five solutions measured with a colorimeter was found to be 0.240, 0.437, 0.621, 0.809, 1.809, respectively. Using Excel and the LINEST function, what was the concentration in the water sample (including error)? [HINT: consider the type of calibration scheme used.]
- The absorbance of a 0.00105% m/v solution of tolbutamide in methanol when measured in a 1 cm path length cell was found to be 0.796 at 228 nm. Calculate the specific absorbance.An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask. and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation of the end point was equal to 13.03 mL. Based on this information, (a) Outline the two steps involved, representing the related reactions. (b) Calculate the concentrations of CaCO3 and MgCO3 present in the initial solution. (c) Calculate the masses of CaCO3 and MgCO3 present in the pellet. (d) Calculate the…. An antacid tablet, weighing 1.25 g, was dissolved in a 1.0 L volumetric flask to allow for determination of calcium carbonate and magnesium carbonate contents. After preparing the solution, an aliquot of 10.0 ml was transferred to an Erlenmeyer flask containing a buffer solution with pH = 10. This aliquot was then titrated with EDTA 0.0040 mol/L and the average volume spent was 15.01 mL. To measure calcium after precipitation. After the magnesium was fractionated, a second 10.00 mL aliquot of the stock solution was transferred to an Erlenmeyer flask, and the pH of the present solution was adjusted to a value of approximately 13. In EDTA titration, the volume consumed for observation of the end point was equal to 13.03 mL. Based on this information, a) Outline the two steps involved, representing the related reactions./5 b) Calculate the concentrations of CaCO3 and MgCO3 present in the initial solution./6 c) Calculate the masses of CaCO3 and MgCO3 present in the pellet./6 d) Calculate…