In the interference experiment preformed, sodium ascorbate powder was added to water to prepare the stock concentration of the interfering substance. On the package label, the manufacturer states that every 1 gram (1,000mg) of sodium ascorbate powder contains 120mg of sodium and 880mg of ascorbate (vitamin C). How much sodium ascorbate must be weighed out (in milligrams) and added to 100 mL of water in order to have a final stock concentration of pure ascorbate equal to 250 mg/dL?

Q: What is the actual or real-life application of atomic mass spectrometry?

A: Mass spectrometry = This is a method used to determine the mass to charge ratio of the ions present…

Q: a 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units).  A second 50-mL…

A: Solution The mechanism of analyte concentration in field-enhanced sample injection (FESI) is…

Q: Would you say that all organic compounds give evidence of containing carbon when they are burned or…

A: All organic compounds are hydrocarbons Or their derivatives for example CH4 is a hydrocarbon and…

Q: 5. 3) Lithium in blood serum of a manic-depressive patient treated with lithium carbonate is…

A:

Q: Copper was determined in a river water sample by atomic absorption spectrometry and the method of…

A:

Q: ASSAY - 20 tablets weighing 2.58 g were crushed to a powder. A portion of the crushed powder (0.5283…

A: Given: A1% = 72.3 Adiluted = 0.582 Stated content = 20 mg

Q: Following the experimental procedure described in the lab manual, a student combined 5.00 mL of…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A student performs this and records the following data from the complted chromatogram. the solvent…

A: The  Rf value is the ratio of distance travelled by the sample (b) to the distance travelled by the…

Q: Suppose that s = 0.28 nA instead of 0.56 nA, but yblank is still 1.26 nA. Find the signal detection…

A: SOLUTION: Step 1: The slope of the calibration is 0.229nA/micrometer. The standard deviation sample…

Q: (A) Suppose a solution contains 0.01 M Fe, has a transmittance of 60 % in a 1 cm cell at 625 nm, The…

A: Absorbance = 2 - log(%T) Also, Absorbance = Molar absorbtivity coefficient × Concentration × Path…

Q: (2) Adenine has a molar absorbance of 4 13.1 M-1cm-1 for 263 nm nucleic acid. What is the molar…

A: Absorbance = log (Ii/It) Ii = Intensity of incident light It = Intensity of transmitted light Also,…

Q: How is mass spectrometry used to determine gunshot residue.

A:

Q: You obtained the following raw data when setting up a Biuret standard curve: Absorbancy 540nm BSA…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: A serum containing sodium Na + gives a signal of 3.09 mV in an atomic emission analysis. Then 4.00…

A: Given that : Initial signal of Na+ = 3.09 mV The volume of added NaCl = 4.00 mL Molarity of the NaCl…

Q: 1. Suggest a reasonable combination of ionization source, mass analyzer, and detector for the…

A: In spectroscopic methods, ionization source creates atomic or molecular ions. A mass analyzer is…

Q: 15.5 mg of Anthracene was dissolved in 200 mL of cyclohexane to prepare the stock solution. 10 mL of…

A: Molar mass of anthracene = 178.23 g/mol Mass of anthracene = 15.5 mg or 0.0155 g Volume = 200 mL or…

Q: 1-proteins-lab-manual?module_item_id=44333 A= abc Where "A" is absorbance, "a" is molar…

A: First question had been answered. Absorbance of a solution can be calculated using Beer Lambert law.

Q: Chemistry tabulate between HLC and plasma radiation sources.

A: HLC stands for hollow cathode lamp which are used in atomic absorption instruments. Plasma radiation…

Q: In an experiment to determine the riboflavin by fluorescence spectrometry, a series of riboflavin…

A: Option A is correct that is 0.725 ppm

Q: Briefly discuss two types of GC detectors under the following headings a) Theoretical principle b)…

A: Full form of GC detector is Gas Chromatography. GC detectors are the devices which are used in the…

Q: At 21 °C, a solution of 12 mL each of 0.00200 M Fe3+ and 0.001000 M SCN- was mixed and brought to…

A: The given reaction is: Fe3+(aq) + SCN-(aq) → Fe(SCN)2+(aq) Here the product, Fe(SCN)2+(aq) is…

Q: Exactly 5.00 mL aliquots of a solution containing analyte X were transferred into 50.00-mL…

A:

Q: alpha source was counted for 10 hours at a distance of 2 cm from a detector with an active face area…

A:

Q: Explain why is FAAS a good method of quantifying Ca in milk?

A: In milk, calcium is spreaded between caesin micelles and milk serum.

Q: Calculate the concentration of this protein in the sample in (ng/mL).

A: We have toCalculate the concentration of this protein in the sample in (ng/mL).

Q: 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units).  A second 50-mL…

A:

Q: A 4.48 mg sample of a compound has a molar mass of 158.03 g/mol was dissolved in a 1000 mL…

A: Mass of compound, wB = 4.48 mg Molar mass, MB = 158.03 g/mol Volume of solution, V = 1000 mL…

Q: Unknown compound D has a melting point of 102-103 degrees C. Carbon/ Hydrogen analysis of compound D…

A:

Q: Which of the following is not true for magnetic sector mass spectrometer? Select one a. lons gain…

A: The mass spectrometer is used to detect the fragmented mass of a molecule which can give the idea to…

Q: A 10 μL aqueous sample containing 1 attogram of Rb+ was injected into a graphite furnace atomic…

A: Given : Volume of solution = 10 μL = 0.01 mL                                 (since 1 mL = 1000 μL )…

Q: b) Compound 2 Mass Spec 100- IR 80- 60 - 40- ce 20 - 1 1221 4 84 219 14 2126 1700 LJ6I 20 1156 20 92…

A: The solution of the question is given below:

Q: Please complete Table 2 and show the calculations for protein concentration and the concentration of…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: DELFIA® (Dissociation Enhanced Lanthanoid Fluorescence Immunoassay) is a time resolved fluorescence…

A: DELFIA is defined as Dissociation-Enhanced Lanthanide Fluorescent Immunoassay which is a…

Q: The mass of a protein was determined to be 92.7 kDa using matrix assisted laser…

A: The relation between kDa (Kilodalton) and Kg (Kilograms)   1 kDa = 1.661 × 10-24 kilogram   By using…

Q: -Serum containing gave a signal of 4.27 mV in an atomic emission analysis. Then 5.00 mL of 2.08 M…

A: We know that,     Concentration = number of moles / volume   Given, 5 ml of 2.08 M NaCl was added to…

Q: One common way to determine phosphorus is by mixing 12-molybdophosphate complex with ascorbie acid…

A: A graph based on Beer-Lambert law, which is to be accomplished.

Q: Interference in sample can have following impact except a. Amount of time needed for analysis is…

A: Quantitative analysis is method of determining the amount or the quantity of the analyte that is…

Q: What are the advantages and disadvantages of using external standards in

A:

Q: Why might IR be a useful tool for the analysis of food products in the fight against EMA? What…

A:

Q: A chemist received a report from an analysis involving the iron-phenanthroline method, containing…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40, a…

A: The ratio of the mass of solute to the mass of solution multiply by 100 is known as percent by mass.

Q: You have a concentrated sample solution of a new wine from a winery to analyze for malic acid…

A: A common relation for the absorbance recorded is, A=εclA=Absorbanceε=Molar absorptivity…

Q: Following the experimental procedure described in the lab manual, a student combined 5.00 mL of…

A:

Q: Analyte in an unknown gave a signal of 9.3 mV.  When 100 mL of 0.211 M standard was added to 100.0…

A: Given: The Unknown signal of 9.3 mV When 100 mL of 0.211 M standard was added to 100.0 mL of unknow…

Q: Calculate the iodine number of a tissue sample in Table 1 and describe the source of the sample…

A: Iodine number : it is the measurement of the unsaturation in fat and oil. It is the value of iodine…

Q: In a Bradford assay, 11 µL of a protein isolate sample was diluted by adding 21 µl of water prior to…

A: Solution- Data given- 11 µL of protein + 21 µL water , BSA protein conc. = 200 µg/ml To find-…

Q: The iron content of a municipal water supply was determined by an atomic absorption procedure. The…

A:

Q: Table 1: Standard Curve for Bradford Method. Absorbance measured at 595 nm Concentration of BSA…

A: A question based on dimensional analysis that is to be accomplished.

Q: m Rel. Intensity Proposed Fragment 15 14.0 26 4.8 27 4.7 4.2 42 6.7 43 100.0 58 37.0 N3445

A: Mass spectral analysis: The peak at 58 m/z is a molecular ion peak because the next peak has less…

Q: ou are developing a Ca detection method for a graphite furnace AA instrument. Your analysis of ten…

A: Calcium is alkaline earth metal  and it belongs second group of the perioidic table  and it looses…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.