Based on intermolecular interactions, which of the following should have the highest boiling point?a.CH4b.CHCl3c.H2S d.CH3OH What is the typical range of strengths of hydrogen bonds?a.5 - 25 kJ per mole of bonds b.5 - 25 kJ per molecule c.500 kJ per mole of bonds d.1 - 2 kJ per mole of bonds e.less than all the above Hydrogen bonding is unimportantina.ice formation b.the liquid properties of water c.DNA structure d.liquid CH4e.liquid HF Which one of the following statements is incorrect?a.Dispersion (London) forces are the weakest type of intermolecular interactions. b.The strong intermolecular attractions in H2O result from hydrogen bonding. c.The boiling point of H2S is lower than H2O. d.The boiling point of non-polar substances tends to decrease with increasing molecular weight. How many atoms per unit cell are there in each of the following cubic lattice types?simple cubicbody-centered cubicface-centered cubic(a)8612(b)124(c)126(d)6814 Which of the species below does notexhibit hydrogen bonding?a.C2H6b.NH3c.HF d.H2O e.C2H5OH Which of the following phase diagrams is consistent with the sublimation of a solid at room temperature (22oC) and atmospheric pressure?
What type of attractive forces are being overcome when liquid oxygen boils at 90 K?a.ionic bonds b.dipole-dipole forces c.covalent bonds d.dispersion forces e.hydrogen bonds What is the coordination number of each sphere in a three dimensional body-centered cubic array of equal-sized spheres?a.4 b.6 c.8 d.12 e.16 Covalent bonds are the only type of bond or intermolecular forces in:a.KF(s). b.CO2(s). c.H2O(s). d.NH4NO2(s). e.C(diamond). The density of silver is 10.5 g/cm3and this metal crystallizes in the FCC structure. Assuming that nearest neighbor atoms are in contact, what is the atomic radius of Ag?a.5.76 Angstroms b.2.88 Angstroms c.2.29 Angstroms d.1.44 Angstroms e.1.02 Angstroms A white substance melts with some decomposition at 730oC. As a solid, it is a nonconductor of electricity but it dissolves in water to form a conducting solution. The white substance is:a.a covalent network solid.
b.an ionic solid. c.a molecular solid. d.a metallic solid.
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