Scientific algebra units

Perhaps the biggest difference between ordinary algebra and scientific algebra is that scientific measurements (and most other measurements) are always expressed with units. Like variables, units have standard symbols. The units are part of the measurements and can often help determine what operation to perform. 

In this unit you will find explanations, examples, and practice dealing with the calculations encountered in the chemistry discussed in this book. The types of calculations included here involve conversion factors, metric use, algebraic manipulations, scientific notation, and significant figures. This unit can be used by itself or be incorporated for assistance with individual units. Unless otherwise noted, all answers are rounded to the hundredth place. The calculator used here is a Casio FX-260. Any calculator that has a log (logarithm) key and an exp (exponent) key is sufficient for these chemical calculations. 

This book is designed to help you leam the fundamentals of chemistry. To be successful, you must master the concepts of chemistry and acquire the mathematical skills necessary to solve problems in this quantitative science. If your algebra is rusty, you should polish it up. Appendix 1 reviews the algebra used in basic chemistry and also shows how to avoid mistakes while solving chemistry problems with your scientific calculator. The factor label method is introduced in Chapter 2 to show you how to use units to help with problem solutions. You can help yourself by using the standard symbols and abbreviations for various quantities (such as m for mass, m for meter, mol for moles, and M for molarity). Always use the proper units with your numerical answers it makes a big difference whether your roommate s pet is 6 inches long or 6 feet long ... 

Simulation in Process Engineering requires specific scientific knowledge among we may cite accurate description of physical properties of pure components and complex mixtures, models for a large variety of reactors and unit operations, as well as numerical techniques for solving large systems of algebraic and differential equations. 

Ans. The process leading to scientific notation for decimals involves expressing these numbers as fractions, then reealling the algebraic rule that the reciprocal of any quantity X (which includes units), that is l/X, may be expressed as X. For example, 1/5 = 5 , and l/cm = cm . ... 

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