Final Exam (C)

A  the frequency decreases

B  the speed decreases

C  Planck’s constant decreases

D  the energy increases

E  None of the above occur as the wavelength of a photon increases.

A  the wavelength increases

B  the speed increases.

C  the wavelength gets shorter.

D  the frequency decreases.

E  None of the above occur as the energy of a photon increases.

A  The halogens tend to form 1+ ions.

B  Nonmetals tend to gain electrons.

C  Anions are usually larger than their corresponding atom.

D  Metals tend to form cations.

E  Atoms are usually larger than their corresponding cation.

A  46.26 amu

B  46.84 amu

C  46.34 amu

D  44.99 amu

E  45.91 amu

A  The average kinetic energy of a particle is not proportional to the temperature.

B  The collisions of particles with one another is completely elastic.

C  The size of the particle is large compared to the volume.

D  A single particle does not move in a straight line.

A  110. mL

B  55.0 mL

C  165 mL

D  220. mL

A  a heterogeneous mixture.

B  an alloy.

C  a solution.

D  a homogeneous mixture.

E  a compound.

A  A hypothesis is speculation that is difficult to test.

B  Once a theory is constructed, it is considered fact.

C  A scientific law summarizes a series of related observations.

D  An observation explains why nature does something.

E  A scientific law is fact.

A  Since the two metals have the same mass, the final temperature of the two metals will be 398 K, exactly halfway between the two initial temperatures.

B  Since the two metals have the same mass, the thermal energy contained in the iron and gold after reaching thermal equilibrium will be the same.

C  Since the two metals have the same mass, but the specific heat capacity of gold is much smaller than that of iron, the final temperature of the two metals will be closer to 298 K than to 498 K.

D  Since the two metals have the same mass, the thermal energy contained in each metal after equilibrium will be the same.

E  None of the above are true.

A  Acid rain is one of the problems associated with the combustion of fossil fuels.

B  The more energy produced per kg of CO2 produced, the better the fuel.

C  Cars that run on hydrogen fuel cells are environmentally friendly.

D  The burning of fossil fuels contributes to global warming.

E  All of the above are true.

A  the vaporization of rubbing alcohol

B  the freezing of water

C  the chemical reaction in a “hot pack” often used to treat sore muscles

D  a hot cup of coffee (system) cools on a countertop

E  the combustion of propane

A  Na2CO3

B  NaOH

C  CH3CO2H

D  CH3CH2OH

A  4.6 × 10-4 

B  4.6 × 1010 

C  3.3

D  2.2 × 10-11 

E  1.1 × 10-13 

A  The solution is considered saturated.

B  The solution would be considered unsaturated if it were cooled a bit to increase the solubility of the solid.

C  The solution is considered supersaturated.

D  The solution is considered unsaturated.

E  None of the above are true.

A  7.59°C

B  3.41°C

C  -2.09°C

D  2.09°C

A  enough solvent to make 1.00 kg of solution.

B  enough solvent to make 1.00 L of solution.

C  1.00 kg of solvent.

D  1.00 L of solvent.

A  1

B  4

C  3

D  2

E  0

A  linear

B  trigonal planar

C  trigonal pyramidal

D  tetrahedral

E  bent

A  1.26 × 103  M

B  21.0 M

C  0.350 M

D  0.0210 M

E  3.50 × 10-4  M

A  29.9

B  0.521

C  0.012

D  0.0335

E  83.7

A  270

B  1.48

C  0.27

D  0.675

E  675

A  -1

B  1

C  0

D  2

A  ClF5

B  SnO2

C  CsI

D  ClF

A  The rate of vaporization increases with decreasing strength of intermolecular forces.

B  The rate of vaporization increases with increasing surface area.

C  Molecules with hydrogen bonding are more volatile than compounds with dipole-dipole forces.

D  The rate of vaporization increases with increasing temperature.

E  None of the above are false.

A  CS2

B  I2

C  HF

D  KI

E  CH4