By Steven S. Zumdahl

Authors Steven and Susan Zumdahl supply all of the parts teachers desire for his or her common chemistry direction. they carry a conceptual method of chemistry and combine problem-solving talents all through, aiding scholars transition from conception to perform. a robust emphasis on versions, real-world purposes, and visible studying prevails during the textual content. The 7th variation seamlessly integrates the strengths of the Zumdahl technique via a entire and interwoven print and expertise software. improved pattern workouts, on-line homework difficulties, and lecture room reaction approach content material support teachers verify conceptual knowing and problem-solving abilities, whereas new animations and photographs aid visible studying. moreover, Houghton Mifflin bargains implementation companies via our TeamUP application to assist teachers and scholars get the main out of the textual content and its supplementations.

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Additional resources for Chemistry, 7th Edition

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85°C Note that in expressing temperature in Celsius units, the designation ЊC is used. The degree symbol is not used when writing temperature in terms of the Kelvin scale. The unit of temperature on this scale is called a kelvin and is symbolized by the letter K. Converting between the Fahrenheit and Celsius scales is somewhat more complicated because both the degree sizes and the zero points are different. Thus we need to consider two adjustments: one for degree size and one for the zero point.

Thus a conclusion based on a series of measurements depends on the certainty of those measurements. For this reason, it is important to indicate the uncertainty in any measurement. This is done by always recording the certain digits and the first uncertain digit (the estimated number). These numbers are called the significant figures of a measurement. The convention of significant figures automatically indicates something about the uncertainty in a measurement. The uncertainty in the last number (the estimated number) is usually assumed to be Ϯ1 unless otherwise indicated.

54 in the conversion factor are exact numbers by definition. 00 in long. What is its length in centimeters? Solution In this case we want to convert from inches to centimeters. 8 cm 1 in Here the inch units cancel, leaving centimeters, as requested. 38. Note that two unit factors can be derived from each equivalence statement. 54 cm 1 in Consider the direction of the required change to select the correct unit factor. 54 cm How do you choose which one to use in a given situation? Simply look at the direction of the required change.

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