Chapter 17 NUCLEAR CHEMISTRY EMBED ChemDraw.Document.5.0 The new nucleus formed is that of Thorium (Th) with 2 fewer protons. Different forms of radiation may be emitted from an unstable radioactive nucleus. 2. Types of radiation -Beta particles are therefore high-speed electrons emitted from the nuclei and, since these are electrons, beta particles have a negative charge and a small mass (0 amu). Beta particles may travel far (2 - 3 m through air). Heavy clothing or one-inch thick wood can be use for protection. EMBED ChemDraw.Document.5.0 - maintain as much distance as possible from the source -use adequate protection -minimize the time of exposure 4. Radiation measurement and Medical applications The curie (Ci) measures the number of nuclear transformations of a radioactive sample. In nuclear medicine, radioisotopes that are given go to specific sites in the body. By detecting the radiation they emit, an evaluation can be made about the location and extent of a tumor for example, or the level of function of a particular organ. Also higher levels of radiation are used to treat or destroy tumors. 5. Half-life The rate of decay for a radioactive isotope varies considerably from one type of nucleus to another. The half-life of a radioisotope is constant and independent of the sample size. The time it takes for half of any sample to decay is called the half-life. EMBED ChemDraw.Document.5.0 Practice sample Using half-life to calculate the amount of radionuclide that remains undecayed after a certain time. The half-life of cobalt-60 is 5.3 yr. if 2.0 g of Co-60 is allowed to decay for a period of 15.9 yr, how many grams of cobalt-60 remain Answer -You must first determine the number of half-lives that have elapsed 15.9 yr x 1 half-life / 5.3 yr 3.0 half-lives Amount of radionuclide undecayed after n half-lives Original amount of radionuclide X 1_ 2n Amount of radionuclide undecayed after 3…
Native Americans and the Trans-Mississippi West
• White men were entering Indian Territory and forcing them to sign
it away, only after the territory was gone did Indians finally start to
fight and resist forces.
• The Plains Indians (northern, central, southern)
• Native American tribes were very clan oriented, (raised children,
made decisions, and provide food) and relied on bison for food,
clothing and trading products until the white men began killing the
the composition and usefulness of the four basic financial statements. It uses a systems approach to address accounting and reporting issues in the sales cycle (revenue recognition, accounts receivable, including the allowance for doubtful accounts, notes receivable, cash receipts, and accruals), the purchase cycle (inventory, noncurrent assets, accounts payable, cash disbursements, depreciation and impairments); and accounting for investment securities. As such, by the end of the course, you should…
second will be five in-class quizzes, which will be on the material covered during the weeks preceding each quiz. The third component will be in-class case study presentations. The fourth component will consist of two mid term exams, and one final exam. NOTE: The quizzes will be administered using Turning Technologies response cards (aka “clickers”), details of which will be posted on my web site. These devices are obtainable either at the book store on campus, or directly from Turning Technologies’ web…
Writing; Ch. 18–20
Research Methods and Practices
Guest Speaker: Librarian Roye Werner
Finalize Group Memberships
Group Roundtables: Product Brainstorming
Quiz 3: Correspondence
Memo 1: Our Group Project
M Sep. 29
Legal, Ethical Concerns
Positive, Negative Messages
Common Style and Grammar Errors
Better Business Writing; Appendices
Essential Grammar and Punctuation Rules (see Garner text)
Quiz 4: Legal and Ethical Concerns
M Oct. 6
Better Business Writing; Ch. 1-5…
open notes. They will consist of multiple- choice questions and problems spread evenly over topics emphasized in class discussions. The exams and tax return project will not be returned, but will be available for review in the office until the end of the University’s specified holding period.
CLASS PLAN – 421A (Actual may vary; only selected topics and homework problems will be discussed in class)
# DATE TOPIC READING HW PROBLEMS
Property Trans Ch.13 45…
information about psychological topics encountered on a day-to-day basis.
This will be a lecture style course in which students will complete assigned readings outside of class and attend lecture to gain insight and take additional notes. Student performance will be assessed through four multiple-choice exams. Material for these exams may be drawn from lecture, readings and any supplemental readings/activities/or multi-media used in class.
Grading: Final grades will be based on…
contact the Disabled Students Programs and Services (DSP&S) Department. Please discuss your accommodations with me during office hours or after class and be sure to allow at least one week to arrange appropriate classroom or testing accommodations. Note: With the appropriate documentation, all class materials can be provided in alternate forms, such as large print, audiotape, Braille, or a computer file. Requests can be made by calling the DSP&S Department at (626) 914-8675.
Required course materials…
information in accordance with the new AP biology exam.
☐ Read AP Cliffs Ch. 1 “Chemistry” takes notes and memorize it
☐ Read AP Barron’s Biology Ch. 3 “Biochemistry” (notes are online on the dat bootcamp website)
Before you begin to watch Chad’s videos, print out all the outlines, hole punch them,
and place them in a binder. Include a few sheets of loose-leaf paper at the end of each
section so you can take notes. Take diligent notes as you watch the videos, copy
the examples, and re-watch them if…
The University of Western Ontario – Calculus 1000
Practice Problems for Fall 2011
Top students in Calculus 1000 typically do more than simply attend lectures and
complete the practice problems assigned by the instructor. Self-directed study activities like
carefully reading the textbook, attempting problems not assigned, attempting projects in the
text, designing new problems and/or “concept” maps, and organizing math study/discussion
groups can also contribute toward effective preparation…
points. The final exam is worth 100 points. Please bring a sharpened number two pencil to all exams. If school is cancelled because of bad weather, the exam will be given on the next scheduled class day. The final exam is mandatory.
NOTE: If a student misses exams one through three for any reason, that exam will be the one dropped. In the rare case when a student misses a second exam, the student will have one week from
the date of the scheduled exam to take the make-up exam.…