Preview

Sig Fig Essay

Satisfactory Essays
Open Document
Open Document
161 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Sig Fig Essay
1.) In a numerical value, how do you know which digits are significant and which are not?
2.) When performing a measurement, how you know how many significant digits to record?
3.) Comment on the nature of the last significant digit in any measured value.
4.) When you are given a numerical value that is the result of a measurement, what do the numbers of significant digits tell you about the precision of the measurement? About its accuracy?
5.) What rules are followed in determining the number of significant digits in the answer to a calculation involving measured values?
6.) What is an "exact" number? How does it affect calculations?
7.) In a multi-step calculation, how should significant figures be handled?
8.) How does the course policy on significant figures differ from that of the textbook?
9.) How should you round a numerical result so that it contains the proper number of significant digits?

Digits are defined as significant if they contribute to precision. These numbers include all non-zero digits,

You May Also Find These Documents Helpful

  • Good Essays

    PreLab Questions

    • 481 Words
    • 2 Pages

    Andrea will be able to read her balance to a greater number of significant figures than Andrew since her balance is more precise. Her successive measurements will also be less variable than Andrew’s measurements.…

    • 481 Words
    • 2 Pages
    Good Essays
  • Good Essays

    1. II and III only 2. I and III only 011 10.0 points Write 0.0000072 using scientific notation. 3. None of these 1.…

    • 1541 Words
    • 14 Pages
    Good Essays
  • Good Essays

    Rule 3- In the final answer of a calculation involving exact numbers, unit conversion factors and constants, the number of significant figures is dictated by the measured quantity involved.…

    • 425 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Nt1310 Unit 6 Lab Report

    • 624 Words
    • 3 Pages

    When adding or subtracting quantities, the number of significant figures is rounded off to the same decimal place as the least precise piece of data. For example, when subtracting 23.385 cm from 18472.3952 cm, the answer will be rounded to the third decimal place, leaving our answer to be 18449.010 cm. It is important to note that defined quantities, such as the number of people at a table, or minutes in an hour,are not subjected to the rules of significant figures because they would not fall victim to erroneous measurements.…

    • 624 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Chem Lab

    • 333 Words
    • 2 Pages

    3. What is the number of significant figures in each of the following measured quantities?…

    • 333 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Chem 1405 Final

    • 1223 Words
    • 5 Pages

    b. What is the density of an object that has a mass of 14.53 g and occupies a of volume of 5.63 mL?…

    • 1223 Words
    • 5 Pages
    Satisfactory Essays
  • Satisfactory Essays

    TMA 01

    • 429 Words
    • 2 Pages

    The significant figure is the number(s) that carry meaning to that particular range of digits. So in the figure 247300, the most significant number is 2 as it tells us the number is 2 thousand and something. If the figure is not significant then there may be some uncertainty to the last digits there after.…

    • 429 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    7. Look at the calibration marks on the thermometer and determine the degree of uncertainty and number of significant figures that can be made when measuring temperature.…

    • 2629 Words
    • 11 Pages
    Good Essays
  • Satisfactory Essays

    Politics in Science

    • 484 Words
    • 2 Pages

    b) Give your answer in standard form to an appropriate number of significant figures (M1)…

    • 484 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Kilogram and Question

    • 593 Words
    • 3 Pages

    Question 10: How many significant figures are in each of the following quantities? i. 0.00062 kg ii. 0.720 in. iii. 4.150 x 103 s iv. 0.305 m3 Answer: i. 2 ii. 3 iii. 4 iv. 3 Question 11: Round off each of the following quantities to two significant figures: i. 32,175,000 µm ii. 3.3000 x 107 kg iii. 0.04721 m iv. 8751 cm3 Answer: i. 3.2 x 107 µm ii. 3.3 x 107 kg iii. 0.047 m iv. 8.8 x 103 cm3 Question 12: An empty crucible has a mass of 25.70 g. After some copper(II) sulfate pentahydrate is added, the mass is 28.855 g. What is the mass of the copper(II) sulfate pentahydrate in the crucible? Answer: 3.16 g Question 13: Assuming that all are measured…

    • 593 Words
    • 3 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Chemistry Study Guide

    • 1349 Words
    • 6 Pages

    9. A calculator answer of 423.6059 must be rounded off to 3 significant figures. What answer is reported?…

    • 1349 Words
    • 6 Pages
    Satisfactory Essays
  • Good Essays

    Notes

    • 5379 Words
    • 22 Pages

    2) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.79 g/mL, 1.81 g/mL, 1.80 g/mL, 1.81 g/mL. If the actual value for the density of the sugar solution is 1.80 g/mL, which statement below best describes her results? A) Her results are neither precise nor accurate. B) Her results are precise, but not accurate. C) Her results are accurate, but not precise. D) Her results are both precise and accurate E) It isn't possible to determine with the information given. 3) A person weighs 77.1 kg. What is his weight in pounds? A) 35.0 pounds B) 154 pounds C) 170 pounds…

    • 5379 Words
    • 22 Pages
    Good Essays
  • Good Essays

    Psychic Lab

    • 1052 Words
    • 5 Pages

    3a. A lot of data is needed to do a statistical test, like the number of correct predictions of each participant in each group and calculate the percentage of accuracy. The difference between groups and the variation within groups are important aspects of a statistical test. The “difference between groups” would be calculated by finding the average of correct answers from the psychic group and the average of correct answers from the nonpsychic group, and then they would be subtracted. So, in each group, I will add up all the correct answers and divide by 60, which is the number of participants in each group, then I will subtract both calculations. 3b. The formula of standard deviation will be used to calculate the variation within the two groups. Xi is each participant’s number of correct answers and x is the average of the correct answers of the group of that participant. n is the sample size of the group, which is 60. is the sign of summation, or the addition of all the calculations of (xi-x) squared. 3c. Results are called statistically significant if they are unlikely to have occurred by chance. In order for the results of this experiment to be statistically significant, the difference between both averages of the groups must be about 2 times or accurately 1.96 times the standard deviation of the…

    • 1052 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Practise Problem Set

    • 509 Words
    • 3 Pages

    (Note: This problem set is for extra practice. It is not for credit, and not to be handed in) Question 1: Suppose that in a study, several measurements were made to determine a particular quantity for different values of . The collected data are summarized in the following table:…

    • 509 Words
    • 3 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Numerical Analysis

    • 306 Words
    • 2 Pages

    • Recognize the difference between analytical and numerical solutions. • Recognize the distinction between truncation and round-off errors. • Understand the concepts of significant figures, accuracy, and precision. • Recognize the difference between true relative error t, approximate relative error a, and acceptable s error…

    • 306 Words
    • 2 Pages
    Satisfactory Essays