Practice Exam Answers

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Consider the chemical equation in equilibrium. cap A times g plus 2 cap b g if and only if cap c times g plus cap d times g plus heat What will happen to the equilibrium of this reaction if the temperature is increased?

A
It will shift to the right because heat is released.
B
It will shift to the right because heat is absorbed.
C
It will shift to the left because heat is absorbed.
D
It will shift to the left because heat is released.
23

Which term best describes liquid behavior under pressure?

A
compressed
B
immiscible
C
surfactant
D
incompressible
25

Which sequence represents the relationship between pressure and volume of an ideal gas as explained by the kinetic-molecular theory?

A
smaller volume right arrow crowded particles right arrow less collisions right arrow lower pressure
B
smaller volume right arrow crowded particles right arrow more collisions right arrow higher pressure
C
more gas particles right arrow more collisions right arrow higher pressure
D
more gas particles right arrow more kinetic energy right arrow more volume right arrow higher pressure
26

Which factor influences both solubility and the rate of dissolution?

A
particle size
B
pressure
C
nature of solvent
D
temperature
27

What is the final, balanced equation that is formed by combining these two half reactions? Cu rightarrow Cu raised to the 2 plus power plus 2 e raised to the negative power NO sub 3 raised to the negative plus 2 power e raised to the negative plus 2 power cap h raised to the plus right arrow NO sub 2 raised to the negative plus cap h power 2 cap o power

A
Cu raised to the 2 plus power plus NO sub 3 raised to the negative plus 4 power e raised to the negative plus 2 power cap h raised to the plus right arrow Cu plus NO sub 2 raised to the negative plus cap h power 2 cap o power
B
Cu plus NO sub 3 raised to the negative plus 2 power cap h raised to the plus right arrow Cu raised to the 2 plus power plus NO sub 2 raised to the negative plus 2 power cap h sub 2 cap o power
C
Cu plus NO sub 3 raised to the negative plus 2 power cap h raised to the plus right arrow Cu raised to the 2 plus power plus NO sub 2 raised to the negative plus cap h power 2 cap o power
D
2 Cu plus NO sub 3 raised to the negative plus 2 power cap h raised to the plus right arrow 2 Cu raised to the 2 plus power plus NO sub 2 raised to the negative plus cap h power 2 cap o power
28

Consider the three equations. 7 to the 14th power cap n plus 1 to the 1th power cap h rightarrow 8 to the 15th power cap o 2 to the 4th power He plus 2 to the 4th power He rightarrow 4 to the 8th power Be 14 to the 28th power Si plus 7 sub 2 to the 4th power He rightarrow 28 to the 56th power Ni Which statement do these reactions best support?

A
Chain reactions play important roles in the process of nuclear fission.
B
Alpha decay occurs only in certain atoms.
C
Beta decay occurs only in certain atoms.
D
Nuclear fusion plays an important role in making elements that are heavier than helium.

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Practice Exam Answers — Chemistry