Question 1

The metal cesium crystallizes in a body-centered cubic lattice.If the density of cesium is 1.88 g/cm3,what is the unit cell volume?

Accepted Answer

A) ​1.77 × 106 pm3 
B) ​2.35 × 104 pm3 
C) ​2.35 × 108 pm3 
D) ​1.17 × 108 pm3 
E) ​4.7 × 104 pm3 
A) ​1.77 × 106 pm3 
B) ​2.35 × 104 pm3 
C) ​2.35 × 108 pm3 
D) ​1.17 × 108 pm3 
E) ​4.7 × 104 pm3

Question 2

A certain solid substance that is very hard,has a high melting point,and is nonconducting unless melted is most likely to be:

Accepted Answer

A) CO2 
B) I2 
C) H2O 
D) NaCl 
E) Cu 
A) CO2 
B) I2 
C) H2O 
D) NaCl 
E) Cu

Question 3

Which of the following compounds has the highest vapor pressure at 25°C?

Accepted Answer

A) CH3CH2OH 
B) CH3CH2CH2CH3 
C) CH3OCH3 
D) CH3CH2CH3 
E) CH3CH2CH2Cl 
A) CH3CH2OH 
B) CH3CH2CH2CH3 
C) CH3OCH3 
D) CH3CH2CH3 
E) CH3CH2CH2Cl

Question 4

The critical point of CCl4 is 283°C and 45 atm pressure.Liquid CCl4 has a vapor pressure of 10.0 atm at 178°C.Which of the following statements must be true?

Accepted Answer

A) Vapor and liquid can only be in equilibrium at one temperature-the normal boiling point. 
B) Liquid CCl4 can exist at temperatures greater than 283°C if the pressure is greater than 45 atm. 
C) Liquid and solid can only be in equilibrium at one temperature-the freezing point. 
D) The triple point of CCl4 must be less than 178°C. 
E) The normal boiling point of CCl4 must be greater than 178°C. 
A) Vapor and liquid can only be in equilibrium at one temperature-the normal boiling point. 
B) Liquid CCl4 can exist at temperatures greater than 283°C if the pressure is greater than 45 atm. 
C) Liquid and solid can only be in equilibrium at one temperature-the freezing point. 
D) The triple point of CCl4 must be less than 178°C. 
E) The normal boiling point of CCl4 must be greater than 178°C.

Question 5

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm3.What is the molar volume of the metal?

Accepted Answer

A) 98.8​ cm3/mol 
B) 24.7​​ cm3/mol 
C) 86.6​​ cm3/mol 
D) 33.3​​ cm3/mol 
E) ​0.38​ cm3/mol 
A) 98.8​ cm3/mol 
B) 24.7​​ cm3/mol 
C) 86.6​​ cm3/mol 
D) 33.3​​ cm3/mol 
E) ​0.38​ cm3/mol

Question 6

The metal niobium crystallizes in a body-centered cubic lattice.If the density of niobium is 8.57 g/cm3,what is the atomic radius of niobium?​

Accepted Answer

A) ​23.1 pm 
B) 113​​ pm 
C) 31.5​​ pm 
D) 29.1​​ pm 
E) ​​142 pm 
A) ​23.1 pm 
B) 113​​ pm 
C) 31.5​​ pm 
D) 29.1​​ pm 
E) ​​142 pm

Question 7

Which of the following compounds has the lowest normal boiling point?

Accepted Answer

A) CH3CH2CH2NH2 
B) CH3CH2CH2F 
C) CH3CH2CH2OH 
D) CH3CH2COOH 
E) CH3CH(OH)CH3 
A) CH3CH2CH2NH2 
B) CH3CH2CH2F 
C) CH3CH2CH2OH 
D) CH3CH2COOH 
E) CH3CH(OH)CH3

Question 8

Which of the following pure substances has the highest standard enthalpy of vaporization at 25°C?

Accepted Answer

A) H2O 
B) NH3 
C) PH3 
D) AsH3 
E) SbH3 
A) H2O 
B) NH3 
C) PH3 
D) AsH3 
E) SbH3

Question 9

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm3.How many atoms are there per unit cell?

Accepted Answer

A) 4 
B) 6 
C) 8 
D) 1 
E) 2 
A) 4 
B) 6 
C) 8 
D) 1 
E) 2

Question 10

Which explanation best describes surface tension?

Accepted Answer

A) Molecules at the surface of a liquid experience a net force towards the liquid's interior. 
B) Molecules at the edges of a liquid adhere to the surface of the liquid's container. 
C) Molecules of a liquid tend to form a concave meniscus. 
D) Molecules of a liquid tend to resist flow. 
E) Molecules of a liquid have a very low vapor pressure. 
A) Molecules at the surface of a liquid experience a net force towards the liquid's interior. 
B) Molecules at the edges of a liquid adhere to the surface of the liquid's container. 
C) Molecules of a liquid tend to form a concave meniscus. 
D) Molecules of a liquid tend to resist flow. 
E) Molecules of a liquid have a very low vapor pressure.

Question 11

Which one of the following statements about solid Cu (face-centered cubic unit cell)is incorrect?

Accepted Answer

A) It will conduct electricity. 
B) The length of a face diagonal is four times the Cu radius. 
C) The number of atoms surrounding each Cu atom is 12. 
D) The solid has a cubic closest-packed structure. 
E) There are two atoms per unit cell. 
A) It will conduct electricity. 
B) The length of a face diagonal is four times the Cu radius. 
C) The number of atoms surrounding each Cu atom is 12. 
D) The solid has a cubic closest-packed structure. 
E) There are two atoms per unit cell.

Question 12

In an experiment,40.0 mmol of helium gas is collected over water.The total volume of gas collected is 0.224 L.Under similar conditions,the gas is collected over two other liquids,A and B.The total volume of gas collected over A and B are 0.222 L and 0.227 L,respectively.Which of the following statements is false?

Accepted Answer

A) Liquid B boils at a higher temperature than water 
B) Liquid A boils at a higher temperature than water 
C) The vapor pressure of B is higher than that of A 
D) The vapor pressure of B is higher than that of water 
E) Liquid A boils at a temperature higher than B 
A) Liquid B boils at a higher temperature than water 
B) Liquid A boils at a higher temperature than water 
C) The vapor pressure of B is higher than that of A 
D) The vapor pressure of B is higher than that of water 
E) Liquid A boils at a temperature higher than B

Question 13

Which pure substance exhibits hydrogen bonding?

Accepted Answer

A) HNF2 
B) B2H6 
C) HBr 
D) H2S 
E) CaH2 
A) HNF2 
B) B2H6 
C) HBr 
D) H2S 
E) CaH2

Question 14

Which of the following best describes carbon dioxide (CO2)at room temperature and pressure?

Accepted Answer

A) ionic solid 
B) nonpolar molecular gas 
C) metallic solid 
D) polar molecular gas 
E) covalent network solid 
A) ionic solid 
B) nonpolar molecular gas 
C) metallic solid 
D) polar molecular gas 
E) covalent network solid

Question 15

Which of the following involves a change in temperature during the phase transition?

Accepted Answer

A) condensation of water 
B) liquifaction of ammonia 
C) fusion of ethanol 
D) all of the above 
E) none of the above 
A) condensation of water 
B) liquifaction of ammonia 
C) fusion of ethanol 
D) all of the above 
E) none of the above

Question 16

Which of the following pure substances has the highest normal melting point?

Accepted Answer

A) NO2 
B) SiO2 
C) CO2 
D) P4O10 
E) N2O5 
A) NO2 
B) SiO2 
C) CO2 
D) P4O10 
E) N2O5

Question 17

Which of the following pure substances has an unusually high normal boiling point?

Accepted Answer

A) CH3OCH3 
B) CH3SH 
C) HCl 
D) CH3NH2 
E) CH3Cl 
A) CH3OCH3 
B) CH3SH 
C) HCl 
D) CH3NH2 
E) CH3Cl

Question 18

Lithium chloride crystallizes in a face-centered cubic structure.The unit cell length is 5.14 × 10-8 cm.The chloride ions are touching each other along the face diagonal of the unit cell.The lithium ions fit into the holes between the chloride ions.How many chloride ions are there in this unit cell?

Accepted Answer

A) 4 
B) 3 
C) 1 
D) 8 
E) 2 
A) 4 
B) 3 
C) 1 
D) 8 
E) 2

Question 19

Which of the following pure substances may exhibit hydrogen bonding?

Accepted Answer

A) CH3Cl 
B) CH3OCH3 
C) H2CO 
D) N(CH3)3 
E) H2NNH2 
A) CH3Cl 
B) CH3OCH3 
C) H2CO 
D) N(CH3)3 
E) H2NNH2

Question 20

Assume 12,500 J of energy is added to 2.0 moles (36 grams)of H2O as an ice sample at 0°C.The molar heat of fusion is 6.02 kJ/mol.The specific heat of liquid water is 4.18 J/g °C.The molar heat of vaporization is 40.6 kJ/mol.The resulting sample contains which of the following?

Accepted Answer

A) water and water vapor 
B) ice and water 
C) only water 
D) only water vapor 
E) only ice 
A) water and water vapor 
B) ice and water 
C) only water 
D) only water vapor 
E) only ice

Exam 11: States of Matter; Liquids and Solids

The metal cesium crystallizes in a body-centered cubic lattice.If the density of cesium is 1.88 g/cm3,what is the unit cell volume?

A certain solid substance that is very hard,has a high melting point,and is nonconducting unless melted is most likely to be:

Which of the following compounds has the highest vapor pressure at 25°C?

The critical point of CCl4 is 283°C and 45 atm pressure.Liquid CCl4 has a vapor pressure of 10.0 atm at 178°C.Which of the following statements must be true?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm3.What is the molar volume of the metal?

The metal niobium crystallizes in a body-centered cubic lattice.If the density of niobium is 8.57 g/cm3,what is the atomic radius of niobium?​

Which of the following compounds has the lowest normal boiling point?

Which of the following pure substances has the highest standard enthalpy of vaporization at 25°C?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm3.How many atoms are there per unit cell?

Which explanation best describes surface tension?

Which one of the following statements about solid Cu (face-centered cubic unit cell)is incorrect?

Which pure substance exhibits hydrogen bonding?

Which of the following best describes carbon dioxide (CO2)at room temperature and pressure?

Which of the following involves a change in temperature during the phase transition?

Which of the following pure substances has the highest normal melting point?

Which of the following pure substances has an unusually high normal boiling point?

Which of the following pure substances may exhibit hydrogen bonding?

Assume 12,500 J of energy is added to 2.0 moles (36 grams)of H2O as an ice sample at 0°C.The molar heat of fusion is 6.02 kJ/mol.The specific heat of liquid water is 4.18 J/g °C.The molar heat of vaporization is 40.6 kJ/mol.The resulting sample contains which of the following?

Chemistry and Measurement

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

Chemical Reactions

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

Solutions

Rates of Reaction

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Thermodynamics and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry of the Main-Group Metals

The Transition Elements and Coordination Compounds

Organic Chemistry

Polymer Materials: Synthetic and Biological

Filters

The metal cesium crystallizes in a body-centered cubic lattice.If the density of cesium is 1.88 g/cm³,what is the unit cell volume?

The critical point of CCl₄ is 283°C and 45 atm pressure.Liquid CCl₄ has a vapor pressure of 10.0 atm at 178°C.Which of the following statements must be true?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 214 pm and the density of the element is 2.63 g/cm³.What is the molar volume of the metal?

The metal niobium crystallizes in a body-centered cubic lattice.If the density of niobium is 8.57 g/cm³,what is the atomic radius of niobium?

A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm³.How many atoms are there per unit cell?

Which of the following best describes carbon dioxide (CO₂)at room temperature and pressure?

Assume 12,500 J of energy is added to 2.0 moles (36 grams)of H₂O as an ice sample at 0°C.The molar heat of fusion is 6.02 kJ/mol.The specific heat of liquid water is 4.18 J/g °C.The molar heat of vaporization is 40.6 kJ/mol.The resulting sample contains which of the following?