Based on the measurement uncertainty of the below instruments, which instruments would yield the lowest percent error? a. analytical balance b. top-loading balance c. serological pipette d. graduated cylinder e. burette f. volumetric flask g. Erlenmeyer flask h. beaker
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Based on the measurement uncertainty of the below instruments, which instruments would yield the lowest percent error?
a. analytical balance
b. top-loading balance
c. serological pipette
d. graduated cylinder
e. burette
f. volumetric flask
g. Erlenmeyer flask
h. beaker
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- a. analytical balanceb. top-loading balancec. serological pipetted. graduated cylindere. burettef. volumetric flaskg. Erlenmeyer flaskh. beaker3. Based on the measurement uncertainty of the above instruments, which instruments would yieldthe lowest percent error?Which of the following is the Eofect'sequente t weighing using an Francis A. Santos analytical balance? I. Press Tare II. Weigh container and sample III. Weigh container A) II, II, I B I, II, II C II, I, I (D) II, I, IIanalytical balanceb. top-loading balancec. serological pipetted. graduated cylindere. burettef. volumetric flaskg. Erlenmeyer flaskh. beaker Define the term, “measurement uncertainty”. Among the instruments listed above, which ones have the highest uncertainty? Which ones have the lowest?
- What is the volume of the liquid based on the measurement shown in the following image? Choose the answer with the correct number of significant figures. ... 15 A 13.0 mL B) 13.00 mL 11.50 mL D 11.5 mLI. Data Record data with units. A. Standardization of KMnO4 1. Mass of beaker/paper + ferrous ammonium sulfate Empty Beaker Beaker and Sample Sample 1 7.40709 8. 4800g Sample 2 7.4364g 9.19498 Sample 3 7.46.324 8.48993 2. Buret readings Initial Reading Final Reading Sample 1 0.00mL 27.00m L Sample 2 21.6 mL 29.5mL Sample 3 33.5mL 29.3mL Mass of Sample 1.0439 0.45269 1.0259 Volume KMnO 27.00mL 27.40 mL 25.8MLa. analytical balanceb. top-loading balancec. serological pipetted. graduated cylindere. burettef. volumetric flaskg. Erlenmeyer flaskh. beaker2. Define the term, “measurement uncertainty”. Among the instruments listed above, which oneshave the highest uncertainty? Which ones have the lowest? (Please include their uncertainty in a table)
- 2. What’s the main purpose of the glass shields on an analytical balance? A. To calibrate the balance B. To stop the current C. To keep out pests D. To prevent finger prints from getting on the weigh panMicrosoft Teams Q Search ... 25 Assignment on matching phrases on classification_ units.docx Close Activity File Home Insert Layout References Review View Help O Tell me what you want to do 'Editing v O Comments A Catch up Chat Calibri (Body) v 11 A В I U Av A A Styles v O Find v Reuse Files O Dictate v E Editor : Designer ... ... MATCHING OF WORDS OR PHRASES Teams 1. Assignments 1. Alloys a) example of a derived unit 2. 2H b) allotropes of oxygen Calendar 3. Mixtures c) two or more different elements bonded 4. Smallest unit of a compound d) centi ... 5. Compound e) a qualitative statement 6. 02 and 03 f) kilo 7. Smallest unit of a compound g) a unit of measurement 8. One thousandth of a unit h) a quantitative statement 9. Teaspoon i) components separable by physical means 10. H2 j) homogeneous mixtures of metals 11. Density k) milli 12. A person is tall I) a molecule of hydrogen 13. one thousand of something m) atom 14. one hundredth n) two atoms of hydrogen 15. Somebody weighs 150…Which of the following is incorrect: a. General steps in quantitative analysis include: Method selection, sampling, sample processing, calibration & measurement. b. Qualitative analytical methods include: gravimetric, volumetric, spectroscopic and electroanalytical methods. c. The first step in sample processing is sample preparation. d. Replication improves the quality of results and their reliability. e. In quantitative analysis there should be a direct proportionality between a measured property and the concentration or amount of substance. Please fill in the spaces one of the following characters (a or b or cor d or e)
- 17. Alphonse Bertillon (1853-1914) devised the first sci- entific system of using a series of body measurements. 18. Criminal laboratories exist in the United States under the control of various governmental agencies at the and levels. 19. In Melendez Diaz v. Massachusetts, the U.S. Supreme Court addressed the practice of using lieu of in-person testimony by forensic analysts. 20. The of physics, chemistry, and geology for the identification of the crime scene investigation. in of the crime laboratory makes use is responsible for dispatching trained 21. The personnel to the scene of crime for retrieving evidence. 22. The application of science to criminal investigation was advanced by judge in Austria. 23. In Fyre v. United States the set forth, which serves as the criterion for judicial ad- missibility of scientific evidence. a public prosecutor and principle was 24. The U.S. Supreme Court held that in assessing the ad- missibility of new and scientific evidence, the trial judge does…Obtain values from the pictures found in the procedure to complete the data table below.Remember to include units!A. Data:1 Mass empty beaker2 Mass beaker + Na2CO33 Mass Na2CO3 used4 Mass graduated cylinder + HCl(aq)5 Mass empty graduated cylinder6 Mass HCl(aq) used7 Total mass before rxn: beaker + Na2CO3 + HCl(aq)8 Mass beaker + salt solution after reaction9 Mass of CO2 generated by the reaction10 Mass of beaker + NaCl (after drying)11 Mass of NaCl Generatedhas an equal probability of being random systematic tends towards being either cannot can Random error is an error that too high or too low. Systematic errors while random errors degree of calibrated. too high or too low. Systematic error is an error that average out with repeated trials, average themselves out. Almost all measurements have some error is when a balance is not properly Reset Help error. An example of