Final Exam (C)

A  the frequency decreases

B  the energy increases

C  Planck’s constant decreases

D  the speed decreases

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

A  the frequency decreases.

B  the speed increases.

C  the wavelength increases

D  the wavelength gets shorter.

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

A  Atoms are usually larger than their corresponding cation.

B  Anions are usually larger than their corresponding atom.

C  Nonmetals tend to gain electrons.

D  The halogens tend to form 1+ ions.

E  Metals tend to form cations.

A  44.99 amu

B  46.34 amu

C  45.91 amu

D  46.26 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  The collisions of particles with one another is completely elastic.

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

A  220. mL

B  165 mL

C  110. mL

D  55.0 mL

A  a compound.

B  an alloy.

C  a heterogeneous mixture.

D  a homogeneous mixture.

E  a solution.

A  A scientific law summarizes a series of related observations.

B  An observation explains why nature does something.

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 each metal after 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 final temperature of the two metals will be 398 K, exactly halfway between the two initial temperatures.

D  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.

E  None of the above are true.

A  The burning of fossil fuels contributes to global warming.

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

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

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

E  All of the above are true.

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

B  the freezing of water

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

D  the combustion of propane

E  the vaporization of rubbing alcohol

A  Na2CO3

B  CH3CH2OH

C  CH3CO2H

D  NaOH

A  4.6 × 1010 

B  4.6 × 10-4 

C  1.1 × 10-13 

D  3.3

E  2.2 × 10-11 

A  The solution is considered supersaturated.

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 unsaturated.

D  The solution is considered saturated.

E  None of the above are true.

A  -2.09°C

B  2.09°C

C  7.59°C

D  3.41°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  3

C  0

D  1

E  2

A  linear

B  bent

C  trigonal pyramidal

D  tetrahedral

E  trigonal planar

A  21.0 M

B  0.350 M

C  3.50 × 10-4  M

D  0.0210 M

E  1.26 × 103  M

A  0.521

B  0.012

C  83.7

D  29.9

E  0.0335

A  270

B  675

C  0.675

D  0.27

E  1.48

A  1

B  -1

C  0

D  2

A  SnO2

B  ClF

C  CsI

D  ClF5

A  The rate of vaporization increases with increasing temperature.

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

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  CS2

B  HF

C  I2

D  CH4

E  KI