Q: 24. approach 100% purity and are used to standardize solutions at a very high degree of accuracy. a.…
A: Q.24 Ans: (a) USP grade The USP or US Pharmacopeia is the organization that sets the bar for potency…
Q: A solution of potassium permanganate of unknown concentration was analyzed against a standard of…
A: To calculate the value of unknown concentration, we must generate a calibration curve in which known…
Q: Which of the satements below is/are limitations of Dumas Method? i. The Ideal condition is just an…
A: In Dumas method we assume that vapour of compound generated by heating the sample in water bath…
Q: Consider the following XRD diffractogram of a sand sample and reference mineral diffractograms: A…
A: Given is the XRD diffractogram of a sand sample, and reference minerals.
Q: HSP-02-754 ppm 180 160 140 120 100 PPM 60 40 20 H. H.
A: The question is based on the concept of spectroscopy. we have to analyse the spectral data…
Q: Find the percentage of K in the sample as received.
A: Soln: First get the weight of the dried sample: Wt sample –(% moisture* wt sample) = wt sample…
Q: A calibration curve was prepared that yielded a linear fit of y = 307x with an R2 value of 0.915.…
A: When we plot the graph of absorbance vs concentration we get straight line with line equation y =…
Q: 1. Which balance would result in 0 degrees of freedom? Mixture 100 kg/h x=0.2 kg S/kg Xw=0.8 kg W/kg…
A: Here we have to find that which balance would result in zero degrees of freedom? The structure is…
Q: A cellulose sponge, 7.0c
A: 1. Volume of sponge (V) = Thickness (T) x Width (W) x Length (L)…
Q: Calculate the hardness of water in ppm CaCO3 if 25.00mL of the sample required 15.00mL of a 0.1000M…
A: Given: Concentration of EDTA solution = 0.1000 M Volume of EDTA solution required = 15.00 mL. And…
Q: the moment of mixing. If, by chance, a pre 10-11. Given this information, will a precipi cause Q =…
A: Given, Molarity of Mg(NO3)2 = 1.38×10-4 M Molarity of NaF = 1.76 ×10-4 M Solubility equilibrium…
Q: If a non-polar mobile phase is used in a non-polar stationary phase, the polar components in a…
A: In the given question, the nature of chromatograpy is discussed based on the polarity concept of…
Q: If the boiling point at standard atmospheric pressure was found to be 74.7°C. What is the observed…
A:
Q: What specimens and procedures require a chain of custody form? Put in a table with corresponding…
A:
Q: Time (min) Which separation is better? What can cause this behaviour (if all other conditions are…
A: To explain which separation is better.
Q: Find the weight factor of iodide I in, Hg(IO2)
A: The amount of quantity of matter present in the substance is explained by the term mass. It is…
Q: growth if no crystals are forming upon a. scratch air-liquid interface on flask with a glass rod or…
A: Interpretation : We have to tell the way by which crystals can grow.
Q: Express 20,000ppb as a percentage strength A. 2% B. 0.02% C. 0.00002% D. 0.002%
A: We have given that Express 20000ppb as a percentage strength A. 2% B. 0.02% C. 0.00002% D. 0.002%
Q: 11: CH₁0 8 3.0 68 6C62 2H 2.0 1.5 1.0 1462.23 ZVSLET CCRCT 0.5 PPM 1145.86 10$9.05 ca 816 783.20
A: Double bond equivalent is DBE which helps us to get an idea about how many ring or double bond or…
Q: A compound microscope has an ocular micrometer calibrated to 12μm for each observable division in…
A: A high-resolution microscope that employs two sets of lenses to provide a two-dimensional image of…
Q: Classification Soft Moderately Hard Hard Very Hard mg/L or ppm 0-60 61-120 121-180 > 180 PROCEDURE:…
A:
Q: 100 80 60 20 - 10 20 30 40 50 60 70 B0 90 100 110 m/z Relative Intensity 우
A: I Think it is of last compound
Q: Use least square regression to determine the best straight line and slope; compare the slope from 5…
A: Given Concentration (M) Absorbance (no units) 0.10 0.09 0.20 0.14 0.30 0.19 0.40 0.27…
Q: Indicate the effect (increases, decreases, or stays the same) that each of the following changes…
A: A question based on analytical separations that is to be accomplished.
Q: Standard Solution 2 3 4 6. Conc. Of PO, 3- (ppm) 0.00 0.2 0.4 0.6 0.8 1.0 Absorbance 0.00 0.033…
A: A question based on Beer-Lambert law, which is to be accomplished.
Q: If 100 mL of a 1:1500 methylbenzethonium chloride lotion is diluted with an equal volume of water,…
A: Dilution of the solution: When we dilute a concentrated solution with pure water, the amount of…
Q: Which of the following describes a gradient elution process? stationary phase has varying…
A: In the given question, the nature of the stationary and mobile phase in the gradient process of…
Q: The absorbance of a sample of erioglaucine was measured to be 0.525 through a 10mm cuvette. The…
A: The relationship between the absorbance (A) and the concentration (X) of a solution is furnished by…
Q: Text Box: 0.2 g of a volatile liquid on complete evaporation occupied a volume of 30 cm3 at standard…
A: · Mass = 0.2 g· Volume = 30 cm3· Standard temperature and pressure 0 °C, 1 atm
Q: is 5 kg/ day. The residual concentration after 10 min contact is 0.1 mg/L. Calculate the dosage and…
A:
Q: 1.) What are the 2 branches of analytical chemistry? 2.) Explain Qualitative Chemistry and…
A: Hi, Since you have posted with multiple questions, as per our guidelines we are able to answer the…
Q: A student was asked to evaluate flow properties based on the procedure for angle for repose. The…
A: According to bartleby guidelines I need to solve only first three sub parts of the given question.…
Q: student runs a TLC of a sample using a nonpolar development solvent. The TLC shows one spot. The MP…
A: Given is, A student runs a TLC of a sample using a nonpolar development solvent. The TLC shows one…
Q: Diprivan® (propofol) is a commonly used sedative-hypnotic agent used for sedation and anesthesia…
A: Here we have to choose the correct nature of diprivan-
Q: IE Doublet Doublet Triplet Integration = 1 Integration = 6 Integration = 1 Нeptet Integration = 1…
A:
Q: Iron(III) chloride-thiocyanate system 1. Prepare a stock solution by adding 2 mL 0. 1 M FeCl̟ and 2…
A: A question based on equilibrium concept that is to be accomplished.
Q: Which statement is valid when the multiple extraction and single extraction is compared. The…
A: Single extraction is the extraction in which only single extraction is done hich is one step whereas…
Q: The best answer to report for 352.94 – 36.0342 is ?
A: The result of addition or subtraction cannot have more digits to the right decimal point than the…
Q: A TLC plate was developed with a series of anlagesics and the unknown sample. An image of the plate…
A: Rf value of each spot = To be determined Identity Of Unknown Solution = To be Determined
Q: 5. The following TLC plate was developed in 4:1 hexane/acetone. a) Draw what the TLC plate could…
A: From the given image for the TLC plate containing the sample eluted with a 4:1 hexane/acetone ratio,…
Q: Match the following terms to the following situations. * Gross Random Systematic Defect Аccuracy…
A: In determiningthe angle ofrepose, Justinforgot to mixthe rock saltand talcproperly. gross error…
Q: Answer the question from picture, please
A: The ratio of the distance travelled by a substance (ds) to the distance travelled by the solvent…
Q: Abs vs Time Trial 1 Ln(Abs) vs Time Trial 1 1/Abs vs Time Trial 1 0.35 0.00 9.00 20 40 60 80 100 120…
A: A question based on chemical kinetics, which is to be accomplished.
Q: Match column A with column B. Write the CAPITAL letter on the space provided before each number.…
A: We have to Match column A with column B and Write the CAPITAL letter on the space provided before…
Q: do
A: Since you have asked multiple question, we will solve the first question for you.If you want any…
Q: HO F Triplet Integration = 2 Doublet Triplet Integration 2 Integration = 3 Triplet Integration 3 В C…
A: Analysis of Nmr Spectra is given below
Q: The moisture percentage in a green feed is 20% and organic matter (based on DM) is 92%. Calculate:…
A:
Q: Enumerate the differences between a serological and a volumetric pipette and enumerate the uses,…
A: The main difference between the volumetric and serological pipette is that The volumetric pipette…
Q: 0.590164444
A: it may be 'at given concentration of NaCl , absorbance of solution.
Q: Which of the following is the reagent used for lead-sulfide test? * potassium dichromate (K₂Cr₂O₇)…
A: Given reagents: potassium dichromate (K₂Cr₂O₇) copper (II) sulfate (CuSO₄) lead acetate…
What is the role of water in Baeyer's Test?
Negative Control |
||
Positive Control |
||
Polar Control |
||
Neutral Control |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Which of the following describes a gradient elution process? stationary phase has varying concentration mobile phase has varying concentration stationary phase has static concentration mobile phase has static concentrationWhich is correct? Random errors affect accuracy and systematic errors affect precision. An accurate result shows agreement with the true or accepted value. Precise results can contain significant random error, but little systematic error. The standard deviation is a good measure of accuracy. Polydimethylsiloxane (PDMS) stationary phases have low polarities. Which of the following statements is TRUE about gas chromatography using PDMS stationary phases? The gas chromatography column is typically packed with silica microparticles. An oven is used to control the column temperature because a constant temperature is always needed in gas chromatography Octane (C8H18, boiling point: 126 ºC) is eluted later than dodecane (C12H26, boiling point: 216 ºC) 3-Pentanone ((C2H5)2CO, boiling point: 102 ºC) is eluted later than propanol (CH3CH2CH2OH, boiling point: 97 ºC)A compound X is to be determined by UV/visible spectrophotometry. A calibration curve is constructed from standard solutions of X with the following results: 0.50 ppm, A = 0.24; 1.5 ppm, A = 0.36; 2.5 ppm, A = 0.44; 3.5 ppm, A = 0.59; and 4.5 ppm, A = 0.70. Find the following: 1. slope and intercept of the calibration curve 2. the mean concentration of the solution of unknown X concentration if the absorbance of 3 replicates are A = 0.29, A = 0.30 and A = 0.32. 3. the standard deviation in the concentration of X
- SCE students measured the concentration of HCl in a solution by titrating with different indicators to find the end point.Indicator Mean HCl concentration (M)(± standard deviation)Number of measurementsBromothymol blue 0.09565 ± 0.00225 28Methyl red 0.08686 ± 0.00098 18Bromocresol green 0.08641 ± 0.00113 29Is the difference between indicators 1 and 2 significant at the 95% confidence level? Answer the same question for indicators 2 and 3Use the calibration curve or linear regression equation to determine the concentration of FD&C blue dye No. 1 in Kool-aid. Food Coloring is 0.026 M in FD&C blue dye No. 1 7.5 x 10 -5 M is 29 mL -> 1000 mLQc10&12 Solve both in the order to get positive feedback please show me hundred percent efficient solution
- 1.) What are the 2 branches of analytical chemistry? 2.) Explain Qualitative Chemistry and Quantitative Chemistry . 3.) What are the examples of Qualitative Chemistry? 4.)What are the examples of Quantitative Chemistry? 5.) Define and explain the feedback system. 6.) Give 3 examples of feedback system.You are given a container with Na3PO3 that is reportedly contaminated. You are asked by your supervisor to determine the percent purity of that sample in order to know the next measures to be taken by the plant. The following are the procedures that you need to do: a. Dissolve sample weighing 1 g in 35 mL water. b. Prepare solution with 45 mL 3% w/v HgCl2, 30 mL 10% w/v C2H3NaO2 and 10 mL CH3COOH. c. Digest sample then filter then rinse the precipitate that weighs 0.2857 g. d. Compute for the % purity.A standard reference material is certified to contain 94.6 ppm of an organic contaminant. Your analysis gives you the follow values, 98.6, 98.4, 95.1 and 97.2 ppm. Can you say with 95% confidence that your values differ from the certified value. Please show work
- 5. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is a. 50.00 mL b. 10.00 mL 6. From the Gaussian (normal) error curve, what is the probability that a result from a population lies between 0 and +1 σ of the mean? What is the probability of a result occurring that is between +1 σ and +2σ of the mean?You have Falcon tubes containing 10 ml and you should add ,that you have in a voltage series, from which concentration in the dilution series you should pipette 0.1 ml to reach the final concentration of 10-5M in the organ bath Group of response options 10-5M 10-4M 10-3M 10-2Mif you perform QC for sodium on a chemistry analyzer and the value is greater than 2SD above the mean. This is the second day that this level of control has been >2SD for that analyte. You mixed the vial and repeated. QC was still "out". It is time to troubleshoot. What do you do?