Adobe PageMaker essays

Adobe PageMaker essays Adobe "portable document format" (PDF) enables users to include complex data like spreadsheets, graphics, and presentation material into a single universally compatible file format. This miraculous bit of software eliminates cross-platform problems that Mac and PC users encounter as well as PC users using different versions of Windows or different brands of software. Regardless of the word processing application, spreadsheet application, or image editor used to create the initial document, PDF can recognize and encompass all of these. One of the most remarkable uses for PDF files is their ability to be shared online among a variety of different users. Furthermore, PDF can be used to create forms that users can fill in on their computer and later print out or submit as PDF. As a result, PDF is commonly used to exchange and distribute government documents. Another benefit of PDF is the relative compactness of the file size, as well as their ability to be read on handheld PC devices and be accessible even to the visually impaired. Finally, PDF files can be made secure by using digital signatures for authenticity. Adobe PageMaker has been used to create a variety of business and creative publications like calendars, brochures, flyers, and newsletters that are usually printed out. PageMaker offers versatility in the layout process and can produce professional-quality publications. Furthermore, if a document like a newsletter is created in PageMaker it can be converted to PDF format and posted on the Web. That way, friends could download or view the newsletter by simply downloading a free version of the Acrobat Reader or Adobe Reader. They would not have to have PageMaker installed on their computer. However, if the friend wanted to make changes to the newsletter, such as altering the content, graphics, or the layout, PageMaker would be ...

Molar Entropy Change of a Reaction - Example Problem

Molar Entropy Change of a Reaction Problem This example problem demonstrates how to find the entropy of reaction from standard molar entropy data on the reactants and products. Entropy is calculated as a change in the level of entropy before and after a chemical reaction. Essentially, it reflects whether the amount of disorder or randomness in the system increased or decreased as a consequence of the reaction. Standard Molar Entropy Change Problem What is the standard molar entropy change of the following reaction? 4 NH3(g) 5 O2(g) → 4 NO(g) 6 H2O(g)Given:SÂ °NH3 193 J/KÂ ·molSÂ °O2 205 J/KÂ ·molSÂ °NO 211 J/KÂ ·molSÂ °H2O 189 J/KÂ ·mol (Note, in this type of problem youll either be given the molar entropy values of the reactants and products or youll need to look them up in a table.)SolutionThe change in the standard molar entropy of a reaction can be found by the difference between the sum of the molar entropies of the products and the sum of the molar entropies of the reactants.ΔSÂ °reaction ÃŽ £npSÂ °products - ÃŽ £nrSÂ °reactantsΔSÂ °reaction (4 SÂ °NO 6 SÂ °H2O) - (4 SÂ °NH3 5 SÂ °O2)ΔSÂ °reaction (4(211 J/KÂ ·K) 6(189 J/KÂ ·mol)) - (4(193 J/KÂ ·mol) 5(205 J/KÂ ·mol))ΔSÂ °reaction (844 J/KÂ ·K 1134 J/KÂ ·mol) - (772 J/KÂ ·mol 1025 J/KÂ ·mol)ΔSÂ °reaction 1978 J/KÂ ·mol - 1797 J/KÂ ·mol)ΔSÂ °reaction 181 J/KÂ ·molWe can check our work using the techniques introduced in this example problem. The reaction involves all gasses and the number of moles of products is greater than the number of moles of reactants so the expected change in entropy should be pos itive. Answer The standard molar entropy change of the reaction is 181 J/KÂ ·mol.