8 are the measurements in problem 6 accurate are they

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
8. Are the measurements in problem 6 accurate? Are they precise? Explain your answers. 9. Which of these measurements was made with the most precise measuring device: 8.1956 m, 89.20 m, or 8.196 m? Explain your answer. Density Data of Sucrose Student B Studend C Trial Density (g/cm 3 ) Density (g/cm 3 ) 1 1.40 1.70 2 1.68 1.69 3 1.45 1.71 Avg
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Accuracy-Precision & Significant Figures in Measurements WS 10. On the rulers below, measure the length of the paper clip, in cm. The measurements will NOT be identical. You must read to the calibration markings then estimate the next decimal place as the final digit. Cover up the ruler(s) below the one you are using to prevent being influenced by them. length: cm sig. fig(s). length: cm sig. fig(s). length: cm sig. fig(s). a. Why were the measurements different? b. Which measurement required the greatest amount of estimation? Which has the most precision? Explain. c. How did you indicate the differences in the precision in your measurements? 11. Measuring Volume: Determine the volume of H 2 O in the following graduated cylinders, using the correct sig figs. Remember to read at the bottom of the meniscus. a. b. c. d. e. 12. Identify the number of significant figures (you do not need units on sig figs): a. 3.0800 kg b. 0.00418 m c. 7.09 × 10 –5 L d. 91,600 miles e. 0.003005 g f. 38 books g. 3.200 × 10 9 s h. 250 °C i. 780,000,000 km j. 20 years in one score k. 0.0101 mL l. 0.00800 cm m. 20,700 inches n. 5.0002 × 10 8 J Answers: 5. % Error (B) = 5%; % Error (C) = 6.9%; 7. % Error = 0.01%, 0.03%, 0.13%
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern