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Duplicate of Part 2 Final Exam Review–Chemistry Flashcards | StudBud
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Duplicate of Part 2 Final Exam Review–Chemistry
Duplicate of Part 2 Final Exam Review–Chemistry
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Final exam review for College Prep Chemistry
Flashcards
22 cards
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Practice quiz
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Host live
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Questions
22
Answers
1
How much PH
3
is formed if you have 6.2 g of P
4
and excess H
2
: P
4
+ 6H
2
--> 4PH
3
45 g
.43 g
6.8 g
270 g
2
At STP, how many liters of oxygen will react with 3.6 liters of hydrogen? 2H
2
+ O
2
--> 2H
2
O
2.0 L
3.6 L
2.4 L
1.8 L
3
How many grams of O
2
are produced if 11.5 g NO
2
are formed? 2Pb(NO
3
)
2
--> 2PbO + 4NO
2
+ O
2
2.00 g
2.88 g
32.0 g
1.00 g
4
CH
4
+ 2 O
2
--> 2 H
2
O + CO
2
[16 g of CH
4
reacts and actually produces 41g CO
2
. What is % yield?]
2.6%
1.1%
93%
39%
5
What is % yield if 6.7 g PbO is produced theoretically, but experiment gives only 5.5 g of PbO?
67%
44%
82%
56%
6
If pressure is constant, the relationship between temperature and volume is
inverse
direct
7
2 H
2
+ O
2
--> 2 H
2
O [what mass of water is produced from 2.0 mol of H
2
]
36 g
18 g
32 g
9 g
8
What are standard temperature and pressure conditions for gases?
0° and 0 atm
0 K and 760 mmHg
-273°C and 1 atm
0°C and 760 mmHg
9
Nitrogen trichloride has the following VSEPR shape:
trigonal pyramidal
bent
tetrahedral
trigonal planar
10
If 3.0 L of helium at 20.0° C is allowed to expant to 4.4 L, what is the new temperature?
-30°C
702°C
157°C
430°C
11
2 Al + 3 CuSO
4
--> Al
2
(SO
4
)
3
+ 3 Cu [how many grams of Cu form from reaction of 51g of Al?]
81 g
2.8 g
180 g
0.045 g
12
Which statement is true if 12 mol of CO and 12 mol of Fe
2
O
3
react? 3CO + Fe
2
O
3
--> 2Fe + 3CO
2
The limitng reactant is Fe2O3 and 36 mol of CO2 will form
The limiting reactant is Fe2O3 and 24 mol of Fe will form
the limiting reactant is CO and 3.0 mol of CO2 will form
the limiting reactant is CO and 8.0 mol of Fe will be formed
13
In the reaction 2CO + O
2
--> 2CO
2
what is the ratio of moles of oxygen to moles to CO
2
?
2:1
1:2
1:1
2:2
14
If temperature is constant, the relationship between pressure and volume is
inverse
direct
15
If pressure of a gas is increased and volume is constant, what will happen to temperature?
increase
stay the same
decrease
16
Given the reaction 2H
2
+ O
2
--> 2 H
2
O .......
110 L
61 L
77 L
19.25 L
17
Given the equation 2 H
2
+ O
2
--> 2H
2
O ........
19.30 L
8.15 mL
8.15 L
4.075 L
18
Carbon Monoxide has the following VSEPR shape
tetrahedral
trigonal planar
bent
linear
19
Carbon dioxide has the following VSEPR shape and polarity
Bent, non-polar
Linear, Non-polar
Bent, Non-polar
Linear, polar
20
How many moles of aluminum are needed to react completely with 1.2 mol of FeO? (*mole ratio*)
1.6 mol
2.4 mol
0.8 mole
1.2 mole
21
One way to increase the pressure of a gas is to
decrease temperature
increase volume
lower the kinetic energy of gas molecules
increase the number of gas particles
22
Answer the following gas law problem
.0658 atm
.0329 kPa
.0658 kPa
.0329 atm
