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NE 105 - Introduction to Nuclear Engineering Spring 2011

NE 105 - Introduction to Nuclear Engineering Spring 2011. Classroom Session 2 - Fundamental Concepts Molecular weight Mole Isotopic Abundances Classic and Relativistic Calculations. Solution to Quiz #0:. Solving Problems, working with units and doing calculations.

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NE 105 - Introduction to Nuclear Engineering Spring 2011

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  1. NE 105 - Introduction to Nuclear EngineeringSpring 2011 Classroom Session 2 - Fundamental Concepts Molecular weight Mole Isotopic Abundances Classic and Relativistic Calculations

  2. Solution to Quiz #0:

  3. Solving Problems, working with units and doing calculations. • Stop! Think. Read again. Inventory given data, and equations known. • Make a diagram. • Write equations, do the algebra. • Replace values with the units included. • Simplify if possible and compute (including UNITS). • Make sense of answer/Review process.

  4. Strong Suggestion: • Use conversion factors as a “1” factor. Example: Use Quad-Lock Converter – If desired Use Mathematica/Maple/etc programs or practice using your calculator.…

  5. or suffer the consequences. Show at least first complete calculation including units. Box answers Staple homework Be mindful of significant digits Number all your pages Please work neat…

  6. Atomic and Nuclear Nomenclature • X, the atomic symbol (H, He, Na, Xe, U, etc.) represents the number of charges in the nucleus (thus electrons, thus chemical behavior). • A= Mass number = protons + neutrons = Nucleons. • Z= atomic number = protons. • X and Z are redundant and normally we only write AX. e.g. 235U, 16O, 3H, 14C

  7. Chart of the Nuclides Isobars Isotopes Z Isotones N

  8. Isobars = A

  9. Atomic Mass Unit • 1/12 of the mass of 12C • Units are: AMU (1 AMU= 1.66e-27 kg) or g/mole • How much a Mole of something weights • Mole (mol) = Avogadro # of entities. • Atomic and molecular weights are given in grams/mole • Concept similar to a “dozen” except it is: 6.022 x 1023 6.02e23 atoms of carbon weight 12 g Notice the mole concept let you convert from mass to number of atoms/molecules

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