Final Exam (B)

A  3

B  0

C  1

D  2

A  H-F

B  H-Cl

C  C-H

D  H-Br

E  H-I

A  enough solvent to make 1.00 L of solution.

B  1.00 L of solvent.

C  1.00 kg of solvent.

D  enough solvent to make 1.00 kg of solution.

A  3.41°C

B  7.59°C

C  -2.09°C

D  2.09°C

A  The freezing point is lowered and the boiling point is elevated.

B  The freezing point is elevated and the boiling point is lowered.

C  The freezing point and the boiling point are elevated.

D  The freezing point and the boiling point are lowered.

E  None of the above.

A  4

B  0

C  1

D  2

E  3

A  T-shaped

B  trigonal pyramidal

C  tetrahedral

D  trigonal planar

A  147 torr

B  31.8 torr

C  41.8 torr

D  239 torr

E  98 torr

A  79 kJ/mol

B  24 kJ/mol

C  13 kJ/mol

D  41 kJ/mol

E  34 kJ/mol

A  6.05 g

B  4.04 g

C  12.1 g

D  2.68 g

A  0.00197 g

B  0.0507 g

C  0.00789 g

D  0.00394 g

A  0.194 M

B  0.775 M

C  1.29 M

D  0.387 M

A  $4.44

B  $63.54

C  $16.79

D  $67.15

A  60.0 ft

B  12.7 ft

C  32.2 ft

D  5.00 feet

E  720.0 ft

A  Protons have about the same mass as electrons.

B  A neutral atom contains the same number of protons and electrons.

C  Electrons make up most of the mass of an atom.

D  Neutrons and electrons are found in the nucleus of an atom.

E  Protons and neutrons have opposite, but equal in magnitude, charges.

A  44.8 mg

B  1.54 x 105 mg

C  129 mg

D  3.56 x 105 mg

E  2.23 × 104 mg

A  – 34.4 kJ/mol NaOH

B  -55.7 kJ/mol NaOH

C  -16.7 kJ/mol NaOH

D  -169 kJ/mol NaOH

E  -27.9 kJ/mol NaOH

A  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.

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, 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  ΔHrxn is the heat of reaction.

B  An exothermic reaction gives heat off heat to the surroundings.

C  ΔErxn is a measure of heat.

D  Endothermic has a positive ΔH.

E  Enthalpy is the sum of a system’s internal energy and the product of pressure and volume.

A  164 nm

B  492 nm

C  792 nm

D  192 nm

E  610 nm

A  Part of the Bohr model proposed that electrons in the hydrogen atom are located in “stationary states” or particular orbits around the nucleus.

B  The uncertainty principle states that we can never know both the exact location and speed of an electron.

C  An orbital is the volume in which we are most likely to find an electron.

D  The emission spectrum of a particular element is always the same and can be used to identify the element.

E  An orbital is the volume in which we are most likely to find an electron.
Part of the Bohr model proposed that electrons in the hydrogen atom are located in “stationary states” or particular orbits around the nucleus.
The uncertainty principle states that we can never know both the exact location and speed of an electron.
The emission spectrum of a particular element is always the same and can be used to identify the element.

A  NH4+ 

B  NH2-

C  CH4 

D  NH3 

E  Br2 

A  A weak base is composed of a cation and an anion with a very weak attraction between them.

B  A strong acid is composed of a proton and an anion that have a very strong attraction for one another.

C  The conjugate base of a very weak acid is stronger than the conjugate base of a strong acid.

D  A strong acid has a strong conjugate base.

E  None of the above statements are true.

A  5.9 g/mol

B  59 g/mol

C  71 g/mol

D  44 g/mol

A  46.6 atm

B  32.6 atm

C  58.7 atm

D  7.02 atm

E  39.6 atm