Concept explainers
Interpretation:
Given table has to be completed using the number of significant figures, estimated digit and magnitude of uncertainty for the given number in the first column.
Concept Introduction:
Whenever a measurement is made, the significant figures in the measured quantity give the actual measurement. For this the significant figures should be recognized first. The significant figures may be non-zero digit and zero digit. But Zero may be or may not be a significant figure. It depends on where the zero appears. Leading zeros in the front of any number are never significant. Zeros between the numbers are significant. When an object is measured with a scale having graduations in centimeter, and if the length of the object falls between 5 and 6, the estimated length would be 5.2 cm. But this value is approximate. This is called the uncertainty error. If the same scale is graduated in tenths of a centimeter, the measurement made would be with less degree of uncertainty. Hence if the markings become smaller, lesser is the degree of uncertainty. Also when any measurement is made, the last number that indicates the actual measurement is termed as estimated digit due to its less uncertainty. The magnitude of measurement and uncertainty of measurement are the two most important information to be conveyed in order to show case the values more exact. The significant figures any measurements are said to convey the uncertainty, while the digit values convey the magnitude.
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Which of the following represent physical properties or changes, and which represent chemical properties or changes? You curl your hair with a curling iron. You curl your hair by getting a “permanent wave” at the hair salon. Ice on your sidewalk melts when you put salt on it. A glass of water evaporates overnight when it is left on the bedside table. Your steak chars if the skillet is too hot. Alcohol feels cool when it is spilled on the skin. Alcohol ignites when a flame is brought near it. Baking powder causes biscuits to rise.arrow_forwardWrite the ordinary form of the following numbers: a 2.32 x 10-2, b 9.27 x 104 c 8.96 x 10-4arrow_forwardIn the accompanying photo, you see a crystal of the mineral calcite surrounded by piles of calcium and carbon, two of the elements that combine to make the mineral. (The other element combined in calcite is oxygen.) Based on the photo, describe some of the physical properties of the elements and the mineral. Are any properties the same? Are any properties different? Calcite (the transparent, cube-like crystal) and two of its constituent elements, calcium (chips) and carbon (black grains). The calcium chips are covered with a thin film of calcium oxide.arrow_forward
- 10. Classify the substance shown in the sketch below. Be sure you check all the boxes under the classification column that are correct for this substance. Substance 0 gas liquid solid Classification element compound mixture pure substance homogeneous mixture heterogeneous mixturearrow_forwardYou've just solved a problem and the answer is the mass of an electron, me=9.11×10−31kilogramsme=9.11×10−31kilograms. How would you enter this number into the answer box? Enter your answer in kilograms using three significant figures. Note that the units are provided for you to the right of the answer box. View Available Hint(s)arrow_forwardThe first box is the key. The second box represents.... 00 00 00 00 00 0 00 OO OO Atom Y: O Atom Z: • A Mixture A Pure substance An Element O Compounds 8:8arrow_forward
- V Complete each row of the table below by filling in the missing prefix or missing exponent. 1 kN 1 N 1 N 1 m N = 10 = 10 10 = 10 0 -9 -6 0 N N N N 3 X Garrow_forwardIf a sample of matter is uniform throughout and cannot be separated into other substances by physical means, it is considered a compound O either a compound or an element a heterogeneous mixture O a homogeneous mixture an elementarrow_forwardComplete each row of the table below by filling in the missing prefix or missing exponent. 1n N = 10 N μ 1 m N 10 N ? 1 N = 10 2 N N 103 Narrow_forward
- A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 × 1027 g. Use this information to answer the question below. Be sure your answers have the correct number of significant digits. How many moles of bricks have a mass equal to the mass of the Earth? 0 X 3 ?arrow_forwardWhich of the following statements is FALSE? O A mixture may be either homogeneous or heterogeneous. Mixtures may be composed of two or more elements, two or more compounds, or a combination of both. Matter may be a pure substance or it may be a mixture. A pure substance may either be an element or a compound. All of these statements are true.arrow_forwardConvert 75 miles into meters. (Use the conversion 1.0 km = 0.621 miles and use metric conversions for the rest of the conversions).arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning
- Living By Chemistry: First Edition TextbookChemistryISBN:9781559539418Author:Angelica StacyPublisher:MAC HIGHERChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning