Final Exam (C)

A  the energy increases

B  the speed decreases

C  Planck’s constant decreases

D  the frequency decreases

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

A  the wavelength gets shorter.

B  the frequency decreases.

C  the wavelength increases

D  the speed increases.

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

A  The halogens tend to form 1+ ions.

B  Anions are usually larger than their corresponding atom.

C  Metals tend to form cations.

D  Nonmetals tend to gain electrons.

E  Atoms are usually larger than their corresponding cation.

A  45.91 amu

B  44.99 amu

C  46.26 amu

D  46.34 amu

E  46.84 amu

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

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

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

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

A  165 mL

B  110. mL

C  220. mL

D  55.0 mL

A  a heterogeneous mixture.

B  a homogeneous mixture.

C  a solution.

D  a compound.

E  an alloy.

A  An observation explains why nature does something.

B  A scientific law summarizes a series of related observations.

C  A hypothesis is speculation that is difficult to test.

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

E  A scientific law is fact.

A  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.

B  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.

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

D  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.

E  None of the above are true.

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

B  The burning of fossil fuels contributes to global warming.

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

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

E  All of the above are true.

A  the freezing of water

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

C  the vaporization of rubbing alcohol

D  the combustion of propane

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

A  Na2CO3

B  CH3CH2OH

C  CH3CO2H

D  NaOH

A  1.1 × 10-13 

B  4.6 × 1010 

C  4.6 × 10-4 

D  2.2 × 10-11 

E  3.3

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

B  The solution is considered supersaturated.

C  The solution is considered saturated.

D  The solution is considered unsaturated.

E  None of the above are true.

A  -2.09°C

B  3.41°C

C  2.09°C

D  7.59°C

A  1.00 kg of solvent.

B  enough solvent to make 1.00 kg of solution.

C  1.00 L of solvent.

D  enough solvent to make 1.00 L of solution.

A  4

B  2

C  0

D  1

E  3

A  trigonal planar

B  tetrahedral

C  bent

D  trigonal pyramidal

E  linear

A  21.0 M

B  0.0210 M

C  1.26 × 103  M

D  3.50 × 10-4  M

E  0.350 M

A  0.0335

B  29.9

C  0.012

D  83.7

E  0.521

A  675

B  0.27

C  0.675

D  270

E  1.48

A  1

B  0

C  2

D  -1

A  CsI

B  SnO2

C  ClF5

D  ClF

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

B  The rate of vaporization increases with increasing temperature.

C  The rate of vaporization increases with increasing surface area.

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

E  None of the above are false.

A  KI

B  HF

C  CH4

D  I2

E  CS2