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1			Acetic acid has a heat of fusion of 10.8 kJ/mol and a heat of vaporization of 24.3 kJ/mol. Estimate the value for the heat of sublimation.
			A)	35.1 kJ/mol
			B)	13.5 kJ/mol
			C)	-13.5 kJ/mol
			D)	-35.1 kJ/mol
			E)	none of the above
2			Use the Clausius-Clapeyron equation to estimate the boiling point of water at 24.0 torr pressure. (ΔHvap = 42.30 kJ/mol)
			A)	33.2°C
			B)	110°C
			C)	25°C
			D)	80°C
			E)	52.9°C
3			The triple point is
			A)	an end to the liquid-gas line in a phase diagram.
			B)	the relationship between the boiling point, melting point and vapor pressure of a substance.
			C)	the point on a phase diagram where solid, liquid, and gas are in equilibrium.
			D)	the three pieces of data needed to solve the Clausius-Clapeyron equation.
			E)	the (P,V,T) coordinate of a point on a phase diagram.
4			The main forces responsible for the structure of DNA are
			A)	ionic bonds and covalent bonds.
			B)	covalent bonds and ionic bonds.
			C)	hydrogen bonds and dipole-dipole interactions.
			D)	covalent bonds and hydrogen bonds.
			E)	covalent bonds and dipole-dipole interactions.
5			Which of the following is not likely to exhibit hydrogen bonding?
			A)	CH3CH2OH
			B)	CH3NH2
			C)	H2O
			D)	NH2OH
			E)	(CH3)3N
6			Methylamine (CH3NH2) can hydrogen bond with water. What is the maximum number of hydrogen bonds in which a single methylamine molecule can participate?
			A)	2
			B)	3
			C)	4
			D)	5
			E)	6
7			In which of the following molecules are dispersion forces likely to be the most important in determining the melting and boiling points?
			A)	H2S
			B)	CO
			C)	HCl
			D)	ICl
			E)	Br2
8			Which of the following liquids would have the highest viscosity at a given temperature?
			A)	C2H5OC2H5
			B)	CH3CH2Cl
			C)	CH3CH2COOH
			D)	CH3COOCH3
			E)	C2H5OH
9			Place the following in order from the least to most soluble in water: 1. HOCH2CH2CH2OH 2. CH3CH2CH2CH3 3. HOCH2C(OH)HC(OH)HCH2OH
			A)	1<2<3
			B)	1<3<2
			C)	2<3<1
			D)	2<1<3
			E)	3<2<1
10			Barium metal crystallizes in a body centered cubic lattice. The unit cell edge length is 502 pm. Calculate the atomic radius of Ba.
			A)	251 pm
			B)	217 pm
			C)	177 pm
			D)	125 pm
			E)	63 pm
11			Krypton crystallizes in a structure that has four Kr atoms in each unit cell, and the unit cell is a cube. The edge length of the unit cell is 0.559 nm. Calculate the density of crystalline Kr in kg/m3.
			A)	9.97 x 10-13 kg/m3
			B)	3142 kg/m3
			C)	3.14 kg/m3
			D)	3190 kg/m3
			E)	none of the above
12			Copper crystallizes in a face-centered cubic lattice. How many copper atoms are there per unit cell?
			A)	1
			B)	2
			C)	4
			D)	8
			E)	12
13			According to the band theory, which of the following provide(s) an explanation for the high electrical conductivity of metals? 1. a partly filled conduction band 2. a valence band overlapping an empty conduction band 3. a filled valence band 4. a large gap between the valence band and the conduction band
			A)	only 4
			B)	3 and 4
			C)	only 3
			D)	1 and 3
			E)	1 and 2
14			Which one, if any, of the following is not an example of a covalent network solid?
			A)	diamond
			B)	SiO2
			C)	Ge
			D)	graphite
			E)	They are all covalent network solids.
15			Consider a crystal of germanium that has been doped with a small amount of aluminum. The doped crystal
			A)	has a lower conductivity than that of pure germanium.
			B)	is a p-type semiconductor.
			C)	has a completely filled valence band.
			D)	is an n-type semiconductor.
			E)	is a superconductor.