2.5 Writing Conversion Factors In the United States,

2.5 Writing Conversion Factors In the United States,

2.5 Writing Conversion Factors In the United States, the contents of many packaged foods are listed in both U.S. and metric units. Learning Goal Write a conversion factor for two units that describe the same quantity. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Equalities Equalities

use two different units to describe the same measured amount. are written for relationships between units of the metric system, U.S. units, or between metric and U.S. units. For example, 1m = 1000 mm (103 mm) 1 lb = 16 oz 2.20 lb = 1 kg Core Chemistry Skill Writing Conversion Factors from Equalities General, Organic, and Biological Chemistry: Structures of Life, 5/e

Karen C. Timberlake 2016 Pearson Education, Inc. Equalities: Conversion Factors Any equality can be written as conversion factors. Conversion Factors for the Equality 60 min = 1 h Conversion Factors for the Metric Equality 1 m = 100 cm General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake

2016 Pearson Education, Inc. Equalities: Conversion Factors and SF The numbers in any equality between two metric units between two U.S. system units are obtained by definition and are, therefore, exact numbers. a definition are exact and are not used to determine significant figures. an equality between metric and U.S. units contain one number obtained by measurement and count toward the significant figures. Exception: The equality 1 in. = 2.54 cm has been defined as

an exact relationship. Therefore, 2.54 is an exact number. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Some Common Equalities General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc.

Metric Conversion Factors We can write metric conversion factors. Both are proper conversion factors for the relationship; on is just the inverse of the other. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. MetricU.S. System Conversion Factors

We can write metricU.S. system conversion factors. In the United States, the contents of many packaged foods are listed in both U.S. and metric units. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Study Check

Write conversion factors from the equality for each of the following: A. liters and milliliters B. meters and inches C. meters and kilometers General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Solution Write conversion factors from the equality for each of the

following: A. B. C. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Equalities and Conversion Factors Within a Problem An equality may also be stated within a problem that applies

only to that problem. The car was traveling at a speed of 85 km/h. One tablet contains 500 mg of vitamin C. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Conversion Factors: Dosage Problems Equalities stated within dosage problems for medication can also be

written as conversion factors. Keflex (Cephalexin), an antibiotic used for respiratory and ear infections, is available in 250-mg capsules. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Conversion Factors: Percentage, ppm, ppb A percentage (%) is written as a conversion factor by choosing a unit and expressing the numerical relationship of the parts of

this unit to 100 parts of the whole. A person might have 18% body fat by mass. To indicate very small ratios, we use parts per million (ppm) and parts per billion (ppb). General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Study Check Write the equality and its corresponding conversion factors.

Identify each number as exact, or give its significant figures in the following statement: Salmon contains 1.9% omega-3 fatty acids. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Solution Write the equality and its corresponding conversion factors. Identify each number as exact, or give its significant figures in the following statement:

Salmon contains 1.9% omega-3 fatty acids. Exact General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake Two SFs 2016 Pearson Education, Inc. Study Check Write the equality and conversion factor for each of the

following: A. Meters and centimeters (length) B. Jewelry that contains 18% gold (percentage) C. One gallon of gas is $3.40. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc. Solution Write the equality and conversion factor for each of the following:

A. Meters and centimeters B. Jewelry that contains 18% gold C. One gallon of gas is $3.40. General, Organic, and Biological Chemistry: Structures of Life, 5/e Karen C. Timberlake 2016 Pearson Education, Inc.

Recently Viewed Presentations

  • Retrospective observational case control study - statistical ...

    Retrospective observational case control study - statistical ...

    Study population and parameters. Retrospective observational case control study in IPF. 35 patients with probable diagnosis of IPF: 8 patients had 1 acute exacerbation (AE), 3 patients had 2 AEs
  • Chapter 16 Covalent Bonding - Chemistry is Fun

    Chapter 16 Covalent Bonding - Chemistry is Fun

    Section 8.2 The Nature of Covalent Bonding OBJECTIVES: Distinguish between a covalent bond and a coordinate covalent bond, and describe how the strength of a covalent bond is related to its bond dissociation energy. Section 8.2 The Nature of Covalent...
  • "High impact teaching, real learning" T&L at DGGS

    "High impact teaching, real learning" T&L at DGGS

    Source: BBC BiteSize. Living conditions in 19th Century cities. Pollution: coal was used to heat houses, cook food and heat water to produce steam to power machines in factories. The burning of coal created smoke, which led to terrible pollution...
  • Human Resource Management

    Human Resource Management

    See Learning Goal 2: Illustrate the effect of legislation on human resource management. The Civil Rights Act of 1964 was a significant piece of legislation and directly brought the federal government into human resource management.
  • Integumentary system

    Integumentary system

    touch receptors in hair root plexus. Anatomy of a hair. hair. composed of columns of dead, keratinized cells bonded together by extracellular proteins. Anatomy of a hair. shaft: portion of hair that projects from scalp. root: portion below scalp.
  • instruction organisation - LT Scotland

    instruction organisation - LT Scotland

    The discussion book * * * * * * Sue Palmer * * * * * * discussion text * presents arguments and information from different viewpoints * "for and against" discussion essay leaflet or article giving balanced account of...
  • Biblija - Stari Zavjet

    Biblija - Stari Zavjet

    (v4) pljeva Sveta knjiga u kršćanstvu i, uvelike, u židovstvu normativna Riječ Božja "Napisao sam za njihovu pouku" (ירה jarâ Izl 24,12) "Napisano nama za pouku" (διδασκαλία Rim 15,4) vrhunski dokument kulture: Mezopotamija, Egipat, Aram, Asirija, Babilon, Perzija, Grčka, Rim......
  • Zack King Unplugged

    Zack King Unplugged

    The 3 Amigos consist of 3 talented local musicians, Trace Mitchell, Joe Mansir and Randy Jeter. They perform a combination of classic to current rock, pop and country hits from the 70's through today. These professional musicians have performed with...