Question Items: Anonymous

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Superconductors01

Multiple choice question Which of the following statements is NOT an accurate description of superconducting materials? A material is considered a superconductor if it conducts electricity much faster than other ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

BoilingPoint01

Multiple choice question Which of the following substances has the highest boiling point? CH 3 OCH 3 CH 3 OH CH 4 CH 3 CH 3 CH ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

OrganicBoilingPoint01

Multiple choice question Which of the following organic compounds has the highest boiling point? Methane Ethane Propane 2,2-dimethylpropane ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

DensityFromUnitCell01

Multiple choice question Oldhamite (CaS) has a rock salt structure like NaCl (which has interpenetrating face-centered cubic structures). The ionic radius of Ca 2+ is 0.99 Å, and the ionic radius of S 2- is 1.84 Å. What is the density ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

VaporPressure01

Multiple choice question Which of the following statements is true? A liquid with a low vapor pressure at room temperature will probably have a low surface tension and a high boiling point. A liq ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

VaporizeIntmolcForces01

Multiple choice question What type(s) of intermolecular forces must be overcome when liquid hexane (CH 3 CH 2 CH 2 CH 2 CH 2 CH 3 ) vaporizes? London forces dipole-dipole forces ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

ClassifySolids01

Matching Classify each of the following substances, in the solid state, as molecular, ionic, covalent network, or metallic. Substance Appearance Melting Pt. (°C) Boiling Pt. (°C) Conducts as solid Conducts as li ...

Matching - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

AtomRadiusUnitCell01

Multiple choice question Nickel has a unit cell that is face-centered cubic with a volume of 43.763 Å 3 . The atom at the center of each face just touches the atoms at the corners. What is the atomic radius of nickel? ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

PhaseEnergyChanges01

Multiple choice question When a liquid is transformed into its vapor at constant temperature, the enthalpy of the vapor is less than the enthalpy of the liquid. energy is released to the surround ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group

LatticeEnergyMelting01

Multiple choice question Which of these substances has the highest melting point? LiBr CaO CO CH 3 OH (Intermolecular Forces: Liquids and Solids, la ...

Multiple choice question - Anonymous - 01/27/2010 - 20:10 - 0 comments - 0 attachments - 1 group