Entrance Exam Practice Questions Well Answered Passed.
Electron configuration for cations - Answer Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions - Answer Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals - Answer s, p, d, f Primary vs secondary structures of proteins - Answer Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) Most bonds in organic compounds are - Answer covalent Properties of water - Answer 1. polar 2. capable of adhesion and cohesion 3. high heat capacity (so it's hard to raise its temp) 4. great solvent 5. high heat of vaporization (allows humans to cool off via sweat) 6. water is less dense as a solid than a liquid Intermolecular forces of water - Answer hydrogen bonding
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