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The top documents tagged [shell helium]
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shell helium
The Chemical Context of Life Chemical Basis of Biology.
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Lecture 2 8/31/05 The Chemical Context of Life Atoms, Bonding, Molecules.
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The Chemical Foundations of Life. Element vs. molecule Ionic bond vs. covalent bond Polar vs. nonpolar Hydrogen bond vs. van der Waals force Hydrophilic.
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Supernova!
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Supernova! The fate of stars with mass greater than 9 solar masses. Principally O and B stars.
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Lecture 18 Stellar populations. Stellar clusters Open clusters: contain 10-1000 stars loose structure Globular clusters: 1000 - 1 million stars centrally.
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Stellar Evolution
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