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Essential Math of Chemistry

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Essential Math of Chemistry

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    1. Essential Math of Chemistry

    2. Math Review

    3. Mathematics of Chemistry

    4. The Importance of Units Units must be carried into the answer, unless they cancel.

    5. Basic Algebra Solve the following for x.

    6. Basic Algebra Solve for x.

    7. Basic Algebra Solve for x.

    8. Basic Algebra Solve for x.

    9. Basic Algebra Solve for x.

    10. Solve for T2, where… P1 = 1.08 atm P2 = 0.86 atm V1 = 3.22 L V2 = 1.43 L T1 = 373 K

    11. A General Procedure for Solving Problems Read the problem carefully and make a list of the “knowns” and the ‘unknowns” Look up all needed information Your lecture notes will have much, if not all, of the needed information Work out a plan and, following your plan, obtain an answer by carrying out the required math. Check over your work This is best done by estimating your answer Ask yourself: “Does the answer seem reasonable?”

    12. How to Succeed in Chemistry Learn the language Use the illustrations Review your notes frequently Work as many problems as possible Do NOT cram for exams.

    13. Hollow Penny

    14. Three of the pennies were of the old copper alloy type (pre-1982). They contain 95% copper and 5% zinc. The penny on top was the new copper plated zinc type. It is 97.6% zinc (all in the center) and 2.4% copper (all in the plating). Zinc has a lower melting point than brass. Much of the zinc actually burned away, leaving the pitted surface you can see in the photo. The copper plating melted and dissolved into the zinc, making the bright gold colored brass lump that joins the other pennies together. I then moved the focus to the bottom penny, and melted the hole in it. The entire procedure took only three or four seconds. Source: sci-toys.com/.../marshmallows/solar_roaster.html Three of the pennies were of the old copper alloy type (pre-1982). They contain 95% copper and 5% zinc. The penny on top was the new copper plated zinc type. It is 97.6% zinc (all in the center) and 2.4% copper (all in the plating). Zinc has a lower melting point than brass. Much of the zinc actually burned away, leaving the pitted surface you can see in the photo. The copper plating melted and dissolved into the zinc, making the bright gold colored brass lump that joins the other pennies together. I then moved the focus to the bottom penny, and melted the hole in it. The entire procedure took only three or four seconds. Source: sci-toys.com/.../marshmallows/solar_roaster.html

    15. THE END

    16. KEYS - Intro. to Chemistry

    17. Resources - Intro. to Chemistry Video 01: World of Chemistry The relationships of chemistry to the other sciences and to everyday life are presented. (added 2006/10/08) World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=793 Video 03: Measurement: the Foundation of Chemistry The distinction between accuracy and precision and its importance in commerce and science are explained. (added 2006/10/08) World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=795 Video 04: Modeling the Unseen Models are used to explain phenomena that are beyond the realm of ordinary perception. (added 2006/10/08) World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=796 Journey through the exciting world of chemistry with Nobel laureate Roald Hoffman as your guide. The foundations of chemical structures and their behavior are explored through computer animation, demonstrations, and on-site footage at working industrial and research labs. Distinguished scientists discuss yesterday’s breakthroughs and today’s challenged.   Produced by the University of Maryland and the Educational Film Center. Released on cassette: Fall 1989 The Annenberg/ / CPB Collection 1-800-LEARNER Video 01: World of ChemistryThe relationships of chemistry to the other sciences and to everyday life are presented. (added 2006/10/08)World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=793 Video 03: Measurement: the Foundation of ChemistryThe distinction between accuracy and precision and its importance in commerce and science are explained. (added 2006/10/08)World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=795 Video 04: Modeling the UnseenModels are used to explain phenomena that are beyond the realm of ordinary perception. (added 2006/10/08)World of Chemistry > http://www.learner.org/vod/vod_window.html?pid=796 Journey through the exciting world of chemistry with Nobel laureate Roald Hoffman as your guide. The foundations of chemical structures and their behavior are explored through computer animation, demonstrations, and on-site footage at working industrial and research labs. Distinguished scientists discuss yesterday’s breakthroughs and today’s challenged.   Produced by the University of Maryland and the Educational Film Center. Released on cassette: Fall 1989 The Annenberg/ / CPB Collection 1-800-LEARNER

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