Concept explainers
(a)
Interpretation:
The equation
Concept Introduction:
Numbers are classified into two, namely the exact numbers and the inexact numbers. Exact numbers appear exactly with no uncertainty and occur during counting, with definite numbers and with no decimal number. While inexact numbers has some uncertainty and occurs during any kind of measurement that is made. Measurements made with numerical are impossible to be so exact. Hence numerical measurements are always inexact.
(b)
Interpretation:
The equation
Concept Introduction:
Numbers are classified into two, namely the exact numbers and the inexact numbers. Exact numbers appear exactly with no uncertainty and occur during counting, with definite numbers and with no decimal number. While inexact numbers has some uncertainty and occurs during any kind of measurement that is made. Measurements made with numerical are impossible to be so exact. Hence numerical measurements are always inexact.
(c)
Interpretation:
The equation
Concept Introduction:
Numbers are classified into two, namely the exact numbers and the inexact numbers. Exact numbers appear exactly with no uncertainty and occur during counting, with definite numbers and with no decimal number. While inexact numbers has some uncertainty and occurs during any kind of measurement that is made. Measurements made with numerical are impossible to be so exact. Hence numerical measurements are always inexact.
(d)
Interpretation:
The equation
Concept Introduction:
Numbers are classified into two, namely the exact numbers and the inexact numbers. Exact numbers appear exactly with no uncertainty and occur during counting, with definite numbers and with no decimal number. While inexact numbers has some uncertainty and occurs during any kind of measurement that is made. Measurements made with numerical are impossible to be so exact. Hence numerical measurements are always inexact.
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
General, Organic, and Biological Chemistry
- Determine whether each statement that follows is true or false: a The SI system includes metric units. b If two quantities are expressed in an equivalency, they are directly proportional to each other. c The scientific notation form of a number smaller than 1 has a positive exponent. d In changing a number in scientific notation whose coefficient is not between 1 and 10 to standard scientific notation, the exponent becomes smaller if the decimal in the coefficient is moved to the right. e There are 1000 kilounits in a unit. f There are 10 milliunits in a centiunit g There are 1000 milliliters in a cubic centimeter. h The mass of an object is independent of its location in the universe. i Celsius degrees are smaller than Fahrenheit degrees. j The uncertain digit is the last digit written when a number is expressed properly in significant figures. k The quantity 76.2 g means the same as 76.200 g. l The number of significant figures in a sum may be more than the number of significant figures in any of the quantities added. m The number of significant figures in a difference may be fewer than the number of significant figures in any of the quantities subtracted. n The number of significant figures in a product may be more than the number of significant figures in any of the quantities multiplied. o The process of analysis of a problem statement includes describing the properties of the given and wanted quantities. p If the quantity in the answer to a problem is familiar, it is not necessary to check to make sure the answer is reasonable. q Conversion factors can be used to change from one unit to another only when the quantities are directly proportional. r When you are learning chemistry, you should check the solution to each problem you solve at two levels: 1 is the value reasonable? 2 what new knowledge or skill did I obtain or improve? s There is no advantage to using units in a problem that is solved by algebra. t A Fahrenheit temperature can be changed to a Celsius temperature by multiplying by a conversion factor.arrow_forwardWhen a large or small number is written in standard scientific notation, the number is expressed as the product of a number between 1 and 10, multiplied by the appropriate power of 10. For each of the following numbers, indicate what power of 10 would be appropriate when expressing the numbers in standard scientific notation. a. 84,961,306 b. 0.4870 c. 0.000033812 d. 3,890,406,000,000arrow_forwardIndicate to what decimal position readings should be estimated and recorded nearest 0.1,0.01,etc. for measurements made with the following devices: a. A ruler with a smallest scale marking of 0.1cm b. A measuring telescope with a smallest scale marking of 0.1mm c. A protractor with a smallest scale marking of 1 d. A tire pressure gauge with a smallest scale marking of 1lb/in2.arrow_forward
- Make the conversion indicated in each of the following: the men’s world record long jump, 29 ft 414 in., to meters the greatest depth of the ocean, about 6.5 mi, to kilometers the area of the state of Oregon, 96,981 mi2 , to square kilometers the volume of 1 gill (exactly 4 oz) to milliliters the estimated volume of the oceans, 330,000,000 mi3 , to cubic kilometers. the mass of a 3525-lb car to kilograms the mass of a 2.3-oz egg to gramsarrow_forwardAn object weighs 9.0330 g. When the object is put into a graduated cylinder that contains 24.9 mL of water, the water levels rises to 30.2 mL. Calculate the density of the object. Hint - first figure out the volume, then calculate density. Choose the answer with the appropriate significant figures and units.arrow_forwardCalculate and give the correct number of significant figures: (4.5 × 10-14) × (5.2 × 103) = (6.1 × 105) / (1.2 × 10-3) = (3.74 × 10-3)4 =arrow_forward
- An empty beaker weighs 38.315 g. A 5.00 mL pipet sample of an unknown liquid was transferred to the beaker. The beaker weighs 44.953 g when weighed with the liquid in it. Calculate the density of the unknown liquid. Report a numerical value only in unit of grams per milliliter.arrow_forwardA 10 mL graduated cylinder has a height of 7.12 inches. Make the following conversion. height in feet.arrow_forwardComplete the follwing table. Decimal notation scientific notation 300,000,000 0.00091 8,770,000 2.04 x 10`5 6.73 x 10`2 5.00 x 10`3arrow_forward
- A student sets up the following equation to convert a measurement. ( The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together(6.2×10^4 Pa×cm^3)× =?kPa×m^3arrow_forwardPerform the following calculations, and report numbers with correct significant figures: (6.626 x 1023) (3.00 x 108) ÷(4.5 x 10-7)A) 4.417 x 1038 B) 4.42 x 1038 C) 4.41 x 1038 D) 4.4 x 1038 E) None of the above Group of answer choices A B C D Earrow_forwardPerform each of the following conversions within the metric system. a.)2319 cm to m b.) 4912.5 g to kg c.) 23.1 cm to mm d.) 561 mL to Larrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning