By Steven S. Zumdahl, Susan A. Zumdahl
CHEMISTRY permits the reader to profit chemistry fundamentals speedy and simply by means of emphasizing a considerate method equipped on challenge fixing. For the 8th variation, authors Steven and Susan Zumdahl have prolonged this method via emphasizing problem-solving ideas in the Examples and through the textual content narrative. CHEMISTRY speaks on to the reader approximately easy methods to method and clear up chemical problems--to learn how to imagine like a chemist--so that they could observe the method of problem-solving to all features in their lives.
Read or Download Chemistry PDF
Best chemistry books
Microfluidic Lab-on-a-Chip for Chemical and Biological Analysis and Discovery
The microfluidic lab-on-a-chip permits scientists to behavior chemical and biochemical research in a miniaturized layout so small that homes and results are effectively greater, and approaches seamlessly built-in. This microscale virtue interprets into better sensitivity, extra actual effects, and higher details.
Phenomena in Mixed Surfactant Systems
Content material: an outline of phenomena concerning surfactant combinations / John F. Scamehorn -- Nonideal combined micelles : thermodynamic types and experimental comparisons / Irvin W. Osborne-Lee and Robert S. Schechter -- New mathematical versions of combined micellization / Robert F. Kamrath and Elias I. Franses -- A learn of combined aqueous suggestions of hydrocarbon and fluorocarbon surfactants utilizing 8-anilino-1-naphthalenesulfonic acid ammonium salt / Kenjiro Meguro, Yasushi Muto, Fujio Sakurai, and Kunio Esumi -- resolution homes of combined surfactant structures : the interplay among azo oil dyes and combined surfactant platforms / Keizo Ogino and Masahiko Abe -- Thermodynamics of the combined micellar procedure sodium decanoate-2-butoxyethanol in water at 25 °C / Fumitaka Yamashita, Gérald Perron, Jacques E.
- Science et Vie - Mai 2004 - Articles sur la Fusion Froide
- Chemistry of Transition Metal Carbides and Nitrides
- Macro- and Microemulsions. Theory and Applications
- Topics in Stereochemistry, Volume 20
- Chemistry of Heterocyclic Compounds: Pyridine and its Derivatives, Part Three, Volume 14
Extra resources for Chemistry
Example text
To be sure that the compound is isopropyl alcohol, we should run several more density experiments. 62 Besides being a tool for the identification of substances, density has many other uses. For example, the liquid in your car’s lead storage battery (a solution of sulfuric acid) changes density because the sulfuric acid is consumed as the battery discharges. 30 g/cm3. 20 g/cm3, the battery will have to be recharged. Density measurement is also used to determine the amount of antifreeze, and thus the level of protection against freezing, in the cooling system of a car.
The following rules should be applied when rounding. Rules for Rounding 1. In a series of calculations, carry the extra digits through to the final result, then round. 2. If the digit to be removed a. is less than 5, the preceding digit stays the same. 3. Rule 2 is consistent with the operation of electronic calculators. b. is equal to or greater than 5, the preceding digit is increased by 1. 4. Although rounding is generally straightforward, one point requires special emphasis. 348 needs to be rounded to two significant figures.
3 because 4 is less than 5. It is incorrect to round sequentially. 4. When rounding, use only the first number to the right of the last significant figure. It is important to note that Rule 1 above usually will not be followed in the Examples in this text because we want to show the correct number of significant figures in each step of a problem. This same practice is followed for the detailed solutions given in the Solutions Guide. However, when you are doing problems, you should carry extra digits throughout a series of calculations and round to the correct number of significant figures only at the end.