YPart Caspirin with [H3O+] = 6.5 x 10 MExpress your answer using two significant figures.YVE ΑΣΦSubmitPart DRequest AnswerIVE ΑΣΦ 1Submit9pancreatic juice with [H3O+] = 3.5 x 10 MExpress your answer using two significant figures.→ OProvide FeedbackRequest AnswerarŰ??Copyright © 2023 Pearson Educatio

Given Part c [H3O+] = 6.5 x 10-4 M Part d [H3O+] = 3.5 x 10-9 M

▼ Part C aspirin with [H3O+] = 6.5 × 10 M Express your answer using two significant figures. ▾ VE ΑΣΦ Submit Part D Request Answer pancreatic juice with [H3O+] = 3.5 × 10 M Express your answer using two significant figures. VE ΑΣΦ Submit Provide Feedback Request Answer PERSHE ? ? Copyright © 2023 Pearson Educatic

▼ Part C aspirin with [H3O+] = 6.5 × 10 M Express your answer using two significant figures. ▾ VE ΑΣΦ Submit Part D Request Answer pancreatic juice with [H3O+] = 3.5 × 10 M Express your answer using two significant figures. VE ΑΣΦ Submit Provide Feedback Request Answer PERSHE ? ? Copyright © 2023 Pearson Educatic

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter5: Errors In Chemical Analyses

Section: Chapter Questions

Problem 5.12QAP

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Ksp = 1.5x10^-11 for Mg(OH)2
(a) Explain the difference between systematic and random errors. State whether the errors in (b)–(e) are random or systematic. (b) A 25-mL transfer pipet consistently delivers 25.031 + 0.009 mL when drained from the mark. (c) A 10-mL buret consistently delivers 1.98 6 0.01 mL when drained from exactly 0 to exactly 2 mL and consistently delivers 2.03 6 0.02 mL when drained from 2 to 4 mL. (d) A 10-mL buret delivered 1.983 9 g of water when drained from exactly 0.00 to 2.00 mL. The next time I delivered water from the 0.00 to the 2.00 mL mark, the delivered mass was 1.990 0 g. (e) Four consecutive 20.0-mL injections of a solution into a chromatograph were made (as in Figure 0-6) and the area of a particular peak was 4 383, 4 410, 4 401, and 4 390 units. (f) A clean funnel that had been in the lab since last semester had a mass of 15.432 9 g. When filled with a solid precipitate and dried thoroughly in the oven at 1108C, the mass was 15.845 6 g. The calculated mass of precipitate was…
1. Calculate the experimental density of a salt solution and the percent error (same as relative error percent) using some or all the data given below. solubility of NaCl salt in water: 0.357 g/mLmass of empty graduated cylinder: 25.19g mass of graduated cylinder + salt solution: 30.47g total volume of salt solution: 4.98 mLtrue density of salt solution: 1.07 g/mL
Boxes 1-2. box 1 answer choices: 6, 3, 5, 4, 1, or 2. box 2 answer choices: -0.90 V, +0.90 V, +2.42 V, +1.04 V, -2.42 V, or -1.04 V.
1. 500.0 mL 0.2 M KI2. 500.0 mL 0.2 M KCl3. 500.0 mL 0.1 M K2S2O84. 500.0 mL 0.1 M K2SO45. 500.0 mL 4.0 mM Na2S2O3 (from Na2S2O3∙5H2O)pls compelete the 2nd table given the data
4. A student measures the density of an Unknown liquid 3times and obtains an average density of 0.705g/mL with a Standard Deviation of 0.352g/mL. 1.What can you say.If anything about the Precision of the measurements? 2.What can you say if anything about the Accuracy of the average density?
Give two examples of the Scale Factor Error (one of the types of systematic error). Please do not give what is already given in the example. I need it ASAP Thank you
The antoine constants I got were A= 4.27873, B= 1355.374, C= -37.853. The temp. range is from 288.3 - 362.3K.
ksp=2.00×10-14
Estimate the absolute deviation(or uncertainty) for the results of the following calculations. Round each result so that it contains only significant digits. The numbers in parentheses are absolute standard deviations. Finally, write the answer and its uncertainty.a.) Y= 6.75 (± 0.03) + 0.843(±0.001) - 5.021 (±0.001) = 2.572b.) Y= 19.97(± 0.04) + 0.0030(±0.0001) + 4.29(±0.08) = 24.263c.) Y= 143(± 6) - 64(±3) = 5.9578 x10-21249 (±1) +77 (±8)
State whether the errors in (a)–(d) are random or systematic:a. A 25-mL transfer pipet consistently delivers 25.031 ± 0.009 mL.b. A 10-mL buret consistently delivers 1.98 ± 0.01 mL when drained from exactly 0 to exactly 2 mL and consistently delivers 2.03 mL ± 0.02 mL when drained from 2 to 4 mL.c. A 10-mL buret delivered 1.983 9 g of water when drained from exactly 0.00 to 2.00 mL. The next time I delivered water from the 0.00 to the 2.00 mL mark, the delivered mass was 1.9900 g. d. Four consecutive 20.0-L injections of a solution into a chromatograph were made and the area of a particular peak was 4 383, 4 410, 4 401, and 4 390 units.
An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 1] Calculate the following for each data set: a) mean b) median c) standard deviation d) coefficient of variation e) the 95% confidence interval for the mean