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    Carbon Nanostructures

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    Unit 4: Carbon Nanostructures Carbon Structures: • Carbon contains six electrons with electronic structure: (1s2)‚ (2s)‚ (2px)‚ (2py)‚ (2pz). Outer s orbital together with three p orbitals form the chemical bonds of carbon with other atoms. • Conventionally‚ solid carbon has two main structures called allotropic forms: diamond and graphite: - Diamond is tetrahedrally bonded through sp3 hybrid bonds that form a 3D network. - Graphite has a layered structure with each layer called graphene formed

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    waves‚ even from the smallest ripple to the most destructive tsunami‚ have similar characteristics. For example they all have crests‚ troughs‚ wave heights‚ lengths‚ and periods. Also‚ water particles that make up the waves all move in identical orbital patterns and only when waves become unstable this motion is destroyed. The course also discussed how the sun light plays a vital role in the sea and how other forms of life depend on chemosynthesis rather than photosynthesis in the deep ocean.

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    His theory was labeled the "greenhouse effect" because carbon dioxide traps heat inthe earth’s atmosphere. Fourier’s theory was challenged by Mulutin Milankovitch‚ who proposed the earth’s changing temperatures were nothing more than a result of orbital changes of earth.But again in the 1950s‚ G.S. Callendar supported Fourier’s greenhouse effect‚ and his work led others to increase their reserach effortts into the concept of global warming. Over 20 mathematical models have been used to analyze global

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    Katherine Coleman Goble Johnson is an African-American mathematician and physicist who is known for calculating the trajectories for many NASA missions. She was born on the 26th of August‚ 1918 in the town of White Sulphur Springs‚ West Virginia. Katherine was a very brilliant child and by the age of 13 she was attending the black West Virginia State College’s high school. At 18‚ she enrolled in the actual college graduating in 1937 with the most advanced honors. In 1939‚ Katherine was handpicked

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    Study Guide 1. Write down the electron configuration for the following atoms (see page 135 in your textbook): Mg Ne Zn 2. Which elements have the following electron configurations? a. 1s22s2 b. 1s22s22p63s23p1 3. Sketch the shape of the following orbitals: s p d 4. Define the term “quantum.” 5. Using the diagram of the atom‚ on the right‚ identify the following: a. Which arrow(s) indicate that electrons absorbed energy? b. Which arrow(s) indicate that electrons lost/emitted energy as light

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    Pharmchem

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    each reaction. What’s the one key  factor that can prevent this reaction from occurring? * In the SN2 reaction‚ the big barrier is steric hindrance. Since the SN2 proceeds through a backside attack‚ the reaction will only proceed if the empty orbital is accessible.  The more groups that are present around the vicinity of the leaving group‚ the slower the reaction will be. That’s why the rate of reaction proceeds from primary (fastest) > secondary >> tertiary (slowest) * In the SN1 reaction

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    you will see the moon and the 8 different phases it goes through. They can be very beautiful or even interesting. Lunar phases happen because the sun’s light reflects off the moon to us earth observers. So depending on where the moon is on its orbital path around the earth‚ gives us our lunar phases. Due to the Moon’s revolution around the earth‚ we see that light as different shapes called phases. The strong gravitational pull of the sun keeps the orbit of the earth and all the other planets

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    Atomic Structure

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    The University of the West Indies (Mona) Department of Chemistry Preliminary Chemistry A (Chem 0901) Atomic Structure: Tutorial 2 For discussion in the week beginning September 24‚ 2012. Answers should be submitted by 9:00 am on Monday September 24‚ 2012 in the box provided. Please write your ID number and Laboratory day clearly on your script. 1. Give an expression for the Balmer-Rydberg equation in terms of wavelength λ‚ the Rydberg constant R‚ and the integers m and n where m < n.

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    Wernher Von Braun‚ a German‚ American‚ aerospace engineer and space architect. He invented two of the most important rockets in the history of rockets‚ the V-2 and the Saturn V. Both of these rockets were very important to the development and furtherment of Missiles and Space Travel. Von Braun was born in 1912 in the Posen Province of then Germany. However after World War One this province was integrated into Poland. Early in his life‚ he stumbled on the book Die Rakete zu den Planetenräumen by Hermann

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    Lesson Plan in Astronomy

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    Lesson Plan in Astronomy I. Objective At the end of the lesson‚ the students are expected to: 1. Identify the different future missions of NASA. 2. Appreciate the exploration of NASA to benefit all mankind. 3. Explain the plans of NASA. II. Subject Matter NASA’s Future Plans About Space Exploration Reference: http://www.nasa.gov/missions/future/index.html Materials: laptop III. Procedure A. Learning Activities Teacher’s Activity“Good Morning Class...”“Let us pray

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