Q: Can I get some help doing these? If I can see one example done I could do the rest
A:
Q: The molarity of a solution is determined by four separate titrations or replicates, where the…
A: Given observations are : 1). 0.4120 2). 0.4920 3). 0.3920 4). 0.4888 5). 0.4320 Standard error…
Q: How many replicate measurements are needed to decrease the 95 and 99% confidence limits for the…
A:
Q: For each of the following statements, answer TRUE or FALSE and explain your answer briefly. If…
A: To “TARE” means to zero out the balance. Below are some general rules about using a digital balance.…
Q: what are the adavantages of the internal standard method compare to calibration curve method
A: In internal standard method, an internal standard filled in the same matrix as the analyte filled.…
Q: 14. Complete the following. a. Make a graph of the following data points. Is the relationship…
A:
Q: Questions 1. C. a. Compute the mean value of the ratio and its standard deviation (Appendix A) of…
A: The mean value can be calculated by the following formula: n=∑iaiN ... (1) Here, ai = value of ith…
Q: An instrumental method was validated by running an analysis on a standard solution with a known…
A: Accuracy: It is generally expressed by the percentage of error. Relative accuracy is the difference…
Q: Match the correct choices with the given. For gravimetric analysis, use this data to answer the…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Study the tabulated data during an gravimetric analysis of BaSO4 experiment Trial T1 T2 T3 Mass of…
A:
Q: Sample Blank $2 $3 $4 $5 $6 $7 $8 $9 $10 Stock of Fe Stock of SC Volume Fe3+, mL 2.000 2.000 2.000…
A: From the given data we have Concentration of [FeNCS2+]=[SCN-] Basing on the given chart we have to…
Q: Describe the following as used in analytical chemistry a) semiqualitative analysis b)Assay c)…
A: The given terms in analytical chemistry has to be defined.
Q: Over-the-counter hydrogen peroxide solutions are 3 % (w/v). You may want to reference (Pages…
A:
Q: Arrange the following steps in performing a general procedure. I. work on the data II. Carry out the…
A: we are required to outline the steps to perform a general procedure
Q: and in 4) To adjust the thiosulfate (S2O32) solution to be used as a titrant in the copper…
A:
Q: For the standard equation, shouldn't it be (0.97-1.09) and so on... because (x-mean)
A: The general equation to find the standard deviation is: ∑i=2n(Xi-μ)2Nwhere Xi = Experimental valuesμ…
Q: Distribution Coefficient - Please help write conclusions based on results provided. Thank You!
A: The mass of acid in ethyl acetate after single extraction = 0.1072 g And, the mass of acid in ethyl…
Q: I am supposed to calculate Average absolute deviation (%). I am not sure if 7.16 is the final…
A:
Q: I got a task in analytical chemistry to calibrate, standardize, verify and validate an analytical…
A: It is said that every location in the world is positioned differently in relation to magnetic…
Q: The significant test used to reject or accept any anomalous measurement is:" Gross sample test" None…
A: Anomalous measurements are measurements that differ from the other results.
Q: Value Number of sig figs 301.50 0.0500 2650 7.560 x 1023
A: To determine the number of significant digits .
Q: Mean [KIO3] (based on titration) = 0.02451 mol L-1 Standard deviation in the mean [KIO3] mol L-1…
A: [KIO3] mol L-1 (χi - μ) (χi - μ)2 0.02459 0.00008 6.4 * 10-9 0.02462 0.00011 1.21 * 10-8…
Q: QUESTION 8 Were the sample prep and the standard prep supplemented with the same amount of internal…
A: An internal standard in analytical chemistry is the substance similar to the unknown sample that is…
Q: d. Are the results (titration volumes) obtained by the two staff significantly different at the 95%…
A: d. We need to apply t-test to answer this.
Q: what are the methods/operations to know in Gravimetric Analysis?
A: A question based on general chemistry that is to be accomplished.
Q: A pharmacist is asked to weigh 140 mg of lidocaine powder on the standard balance. The maximum…
A: Given that, Sensitivity requirement = 3mg Acceptable error = 5% To be calculated, Minimum weighable…
Q: 1. What the difference between primary and secondary standard substances?
A: Since we only answer one question at a time, so we'll answer the first one. Please resubmit the…
Q: A. Standardization of NaOH solution with KHP Trial 1 Trial 2 Weight of KHC,H,o. 1.596 g 1.819 g…
A:
Q: Which of the following is true regarding calibration curve? a. Most calibration curves show positive…
A: To define: Calibration curve.
Q: Concentration Initial Final Volume Mass percent of acetic acid of Heinz volume Volume(mL) (mL) of in…
A:
Q: What is the fundamental difference between gravimetric and volumetric analysis? Use the editor to…
A: The difference between gravimetric and volumetric Analysis is given below ----
Q: psychometric
A: Psychrometric charts are complex graphs that can be used to assess the physical and thermodynamic…
Q: 2. Determining the Acid Content of Vinegar Trials A В C Volume of Vinegar used (ml) 25.00 diluted to…
A:
Q: B. Same as Part A, but three determinations are made: Sample 1 Sample 2 Sample 3 mass of sample…
A: B. Given that : Sample 1 Sample 2 Sample 3 Mass of sample 0.4892 g 0.3981 g 0.3429 g Mass…
Q: Explain briefly the percent volume and percent retrieval in separation of mixtures.
A:
Step by step
Solved in 2 steps with 1 images
- 2) As an example of precision and accuracy of data, suppose the % carbon in a single compound has been measured thrce separate times by 2 different students. The theoretical % carbon is 21.34%. Student 1: trial 1:26.11%, trial 2: 26.24% trial 3: 25.92 %, Avg - 26.09 Student 2: trial 1: 20.35%. trial 2: 22.64 % trial 3: 19.79 %. Avg = 20.93 a) Which student had the more precise data and how can you tell? b) Which student had the more accurate data and how can you tell? 3a) Calculate the % error of Student 1 data in problem 2 above. Show all work below. WATCH SIG FIGSGiven the following data, what is the molarity? Include the relative error Error is 1.0 mg or 1.0e-4Help 100% 4A To Public Health Ch x * HSC 258 - Major Projec X MindTap - Cengage Lea X C The Illustration To TH d%=55750828934189288909969212&elSBN=9781305657571&id=D1061392007&nbld=21... * Q Search th References Use the References to access important values if needed for this question. For the following reaction, 24.7 grams of sulfur dioxide are allowed to react with 9.95 grams of oxygen gas . sulfur dioxide(g) + oxygen(g) → sulfur trioxide(g) What is the maximum mass of sulfur trioxide that can be formed? grams What is the FORMULA for the limiting reagent? grams What mass of the excess reagent remains after the reaction is complete? Submit Answer
- The molarity of a solution is determined by four separate titrations or replicates, where the obtained data was 0.4120, 0.4920, 0.3920, 0.4888 and 0.4320 M. Calculate the standard error of the mean for the above data.Help 100% 47 Tue 4: Public Health Ch HSC 258 - Major Projec X Mind Tap - Cengage Lea X C The Illustration To The d%355750828934189288909969212&elSBN=9781305657571&id=1061392007&nbld=D21... Tp Q Search this ce References Use the References to access important values if needed for this question. For the following reaction, 5.66 grams of oxygen gas are mixed with excess carbon (graphite) . Assume that the percent yield of carbon dioxide is 69.8 %. → carbon dioxide(g) carbon (graphite)(s) + oxygen(g) grams What is the ideal yield of carbon dioxide ? grams What is the actual yield of carbon dioxide ? Submit AnswerHow would I solve Problem 4? I have the excel graph as provided. Need to get the %Mn I have some small idea but think is wrong... would be... %Mn = 500mL * 1molMn/ g MnO4 * 1molMn/1molMnO4- * gMn/1molMn * 100%/SampleMassg
- The instructor reveals that the weak acid is hypochlorous acid, HOCl. The known Ka for HOCl is 4.0×10-8. What is the percent error in the experiment?In the Analytical Chemistry laboratory, one of the B.Sc student Ms. Fatma wanted to analyze the presence of Iron(II) ion in the water samples collected from Sohar Industrial Area in the Sultanate of Oman and analyzed by Spectrophotometric method. (1) 250.00 mL of this water sample (Solution A) known to contain unknown amount of FeSO4. She has diluted Solution A by a dilution factor 10 to make 250.00 mL solution, which she labeled Solution B. Using Spectrophotometer, she has measured the absorbance value (0.642) for Solution B at 508 nm using 1.00 cm cell (cuvet). The molar absorptivity value for Fe2* ion at 508 nm is ɛ508 = 30.8 M-1cm1. (i) What volume of the solution A did she require to make the 250.00 mL of Solution В? (ii) in (i)? What instrument should she use to transfer the volume of the Solution A calculated (ii) Concentration of FeSO4 in Solution B. (iv) Concentration of FeSO4 in Solution A. Mass of FeSO4 in Solution A (Show your calculation) (v)phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&- 8r 10 13 140 15 16 20 11 12 17 18 19 20 A Moving to another question will save this response. Quèstion 6 Select the statement that is not supported by the following equation: q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal) The total change in heat is the sum of the changes in heat of water and a metal. Energy is conserved. Energy is transferred between water and a metal. Energy is lost during a calorimetry experiment. A Moving to another question will save this response. hp & %23 9. 6. 00 进3
- Explanation is needed. Thank you! <33Sample IdentificationCodeConcentration of M%TA=2-log(%T)Q50004.00 x 10-417.90.75Q50013.20 x 10-425.00.6Q50022.40 x 10-435.70.46Q50031.60 x 10-450.20.3Q50048.000 x 10-570.80.15SampleIdentificationCode%TA=2-log(%T)AMQ0210150143.70.359518560.360.000192Q0210150244.10.355561410.360.00018Q0210150343.80.358525890.360.00017Q0210150444.10.355561410.360.00018Q0210150543.80.358525890.360.00017What was their percent error?43%Does Batch 021015 meet legal requirements?No, because it is not between 2.85 * 10(4) and 3.15 * 10(4)Well #DropsBluedye1234567891012345678910Drops 9Distilled water876543210Concne 0.26tration0.52Test Tube #0.781.041.3Solutions3Concentration (M)2.082.32.6Concentration (ppm)1:1 dilution11.82Starting Dilution21.562:1 dilution0A.Zero standard0Was your calibration curve as linear as you expected?B.Did you experience any âdriftâ of the resistance readings?C.What is the equation of your best-fit line?D.What commercial drink did you analyze?E.Assuming…2. Quantitative analysis student Analytical analyzed an ore sample for its lead content and obtained a mean of 4.75% Pb for five measurements. If the certified true value is 4.50%, what is the (a) percent error? (b) percent accuracy?