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AP Chemistry Semester One Review (PART TWO) Flashcards | StudBud
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AP Chemistry Semester One Review (PART TWO)
AP Chemistry Semester One Review (PART TWO)
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Semester one final exam review
Flashcards
13 cards
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Practice quiz
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Questions
13
Answers
1
A sample of pure gas at 27
o
C and 380 mmHg occupies a volume of 492 mL. What is the number of moles in the sample?
7.6 mol
0.35 mol
0.11 mol
0.010 mol
2
In which of the following reactions is carbon reduced?
C2H2(g) + O2(g) → CO2(g) + H2O(g)
CO2(g) → CO(g) + 1/2O2(g)
C(s) + H2O(l) → CO(g) + H2(g)
CO2(g) + H2O(l) → H2CO3(aq)
3
An unknown gas at STP has a density of 1.25 g/L. Which of the following could be the gas?
CH4(g)
N2(g)
NH3(g)
HCl(g)
4
The Kinetic Molecular Theory postulates a direct relationship between:
pressure and effusion rate.
pressure and average kinetic energy.
temperature and average kinetic energy.
volume and average kinetic energy.
5
6.02 x 10
23
molecules of NH
3
(g) and 3.01 x 10
23
molecules of H
2
O(g) has a P
Total
of 6.00 atm. What is P
NH3
?
1.00 atm
3.00 atm
4.00 atm
2.00 atm
6
Which of the following substances would be expected to have the HIGHEST boiling point?
CF4 (carbon tetrafluoride)
CCl4 (carbon tetrachloride)
CBr4 (carbon tetrabromide)
CI4 (carbon tetraiodide)
7
Liquid hexane, C
6
H
14
, would be the most miscible with which of the following?
NF3(l)
H2O(l)
NaCl(aq)
CCl4(l)
8
When the valves below are opened, the gases are allowed to mix fully at constant T. Which gas exerts the greatest P?
All three gases would exert the same pressure.
H2O
N2
H2
9
Which of the following when added to Na
2
SO
4
(aq) will form a precipitate?
K2S(aq)
LiNO3(aq)
BaCl2(aq)
NaBr(aq)
10
The valves below are opened and the gases are allowed to mix fully at constant T. Which gas has the fastest avg speed?
H2
H2O
All gas particles are moving at the same speed.
N2
11
The Lewis diagram for nitric acid, HNO
3
, is given. Which of the following statements is true regarding nitric acid?
The nitrogen and oxygen atoms are all in the same plane.
The nitrogen atom carries a negative formal charge.
All N - O bonds are of identical length.
There is a third equivalence resonance structure that is not shown.
12
0.205 mol AgNO
3
(aq) and 0.352 mol Na
2
S(aq) react and form 0.0700 mol of precipitate. Calculate the percent yield.
68.3%
85.2%
51.2%
42.6%
13
Rank the following in order of increasing boiling point: LiCl, C
3
H
7
OH, C
4
H
8
, N
2
LiCl < C4H8 < N2 < C3H7OH
N2 < LiCl < C3H7OH < C4H8
LiCl < C4H8 < C3H7OH < N2
N2 < C4H8 < C3H7OH < LiCl
