The tolerance of a Class A 25 mL transfer pipet is +0.03 mL. A student uses an uncalibrated Class A transfer pipet to deliver atotal of 125 mL of solution. What is the uncertainty in the delivered 125 mL?mL0.15Next, the student calibrates the pipet. The calibrated pipet delivers a mean volume of 24.995 mL with an uncertainty of+0.006 mL. The student then uses the calibrated 25 mL pipet to deliver a total of 124.975 mL of solution. What is theuncertainty in the delivered 124.975 mL?0.375mLIncorrectHow does the uncertainty in the delivered volume using the calibrated pipet compare to the uncertainty in the deliveredvolume using the uncalibrated pipet?O The uncertainty in the delivered volume is the same for the calibrated and uncalibrated pipet.O The uncertainty in the delivered volume using the calibrated pipet is greater than the uncertainty in the deliveredvolume using the uncalibrated pipet.O The uncerainty in the delivered volume using the calibrated pipet is less than the uncertainty in the delivered volumeusing the uncalibrated pipet.山T四aeétv AA A OhuluMacBook ProG Search or type URL

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Answered: The tolerance of a Class A 25 mL…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

ChapterA: Scientific Notation And Experimental Error

Section: Chapter Questions

Problem 8P

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The tolerance of a Class A 10 mL transfer pipet is ±0.02 mL. A student uses an uncalibrated Class A transfer pipet to deliver a total of 50 mL of solution. What is the uncertainty in the delivered 50 mL? 士 mL Next, the student calibrates the pipet. The calibrated pipet delivers a mean volume of 9.993 mL with an uncertainty of +0.006 mL. The student then uses the calibrated 10 mL pipet to deliver a total of 49.965 mL of solution. What is the uncertainty in the delivered 49.965 mL? mL How does the uncertainty in the delivered volume using the calibrated pipet compare to the uncertainty in the delivered wolume using the uncalibrated ninet? esc GSearch or type URL %23 & 2 3 4. 6 8 del Q W E R T P A D G J K C V M H command command option
A calibrated pipet delivers a mean volume of 24.991 mL with a standard uncertainty of ± 0.006 mL. What is the uncertainty if you deliver four aliquots to reach 100 mL?
The tolerance of a Class A 25 mL transfer pipet is +0.03 mL. A student uses an uncalibrated Class A transfer pipet to deliver a total of 125 mL of solution. What is the uncertainty in the delivered 125 mL? mL 0.15 Next, the student calibrates the pipet. The calibrated pipet delivers a mean volume of 24.995 mL with an uncertainty of +0.006 mL. The student then uses the calibrated 25 mL pipet to deliver a total of 124.975 mL of solution. What is the uncertainty in the delivered 124.975 mL? 0.375 mL Incorrect How does the uncertainty in the delivered volume using the calibrated pipet compare to the uncertainty in the delivered volume using the uncalibrated pipet? O The uncertainty in the delivered volume is the same for the calibrated and uncalibrated pipet. O The uncertainty in the delivered volume using the calibrated pipet is greater than the uncertainty in the delivered volume using the uncalibrated pipet. The unceWainty in the delivered volume using the calibrated pipet is less than…
Estimate the absolute deviation and the coefficient of variation 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. (1.203 (+0.004) × 103 + 1.625 (±0.005) × 102 – 34.012(±0.001) y = - %3D 3.9201 (±0.0006) × 10-3
3-3 Types of Error; 3-4 Propagation of Uncertainty from Random Error ¹. If A = 3.475 (±0.002), B = 87.336 (±0.001), C = 10.004 5 (±0.000 5), D = 11.8 (±0.2), and E = 5.10 (±0.03), report the answers of the following calculations with both the absolute uncertainty and the percent relative uncertainty. a) (A - B) X E c) (10-) / (E/1000) b) (C+D)/(A X E) d) [ (A + B + C) x (B - C - E)] / [DXE]
Norepinephrine can be analyzed in human urine. A fixed amount of DHBA was added to each sample and standard in a fixed concentration. Please explain the analytical function of adding DHBA. To the 1 mL of urine sample, small amounts of 1 µg/mL norepinephrine standard is added and the following results were obtained. What is the concentration of the norepinephrine in the urine sample with uncertainty?
If you were pipetting 17.0 mL, what is the percent error in the pipet? I know that Volumetric pipet with 10.0ml has precision of +-.02 and a Volumetric pipet of 20.0 ml has a precision of +- 0.06, but I'm not sure how to use this information to get the answer.
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The tolerance of a Class A 50 mL transfer pipet is ±0.05 mL. A student uses an uncalibrated Class A transfer pipet to deliver a total of 200 mL of solution. What is the uncertainty in the delivered 200 mL?
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)
a) To prepare 250mL of 0.100 M H2SO4, a student uses graduated pipette and a 250mL volumetric flask having uncertainty of ±0.02mL and ±0.1mL respectively. Calculate the volume of concentrated sulfuric acid 96% (±3) used and the uncertainty in 0.100M. dH2SO4 96 % = 1.84 (±0.05) g/mL FMH2SO4 = 98.079 g/mol b) If you want to prepare 1.00 L of buffer at pH 7.54 with a total phosphate concentration of 0.500 M, how many grams of each selected compounds below would you mix? Given that: H3PO4 (FM 98.00), NaH2PO4 (FM 119.98), Na2HPO4 (FM 141.96), and Na3PO4 (FM 163.94)? Ka1 = 7.1 x 10-3; Ka2 = 6.3 x 10-8; Ka3 = 4.5 x 10-13

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