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Geokitty's Final Exam Review Chemistry Flashcards | StudBud
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Geokitty's Final Exam Review Chemistry
Geokitty's Final Exam Review Chemistry
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Final exam review for College Prep Chemistry
Flashcards
52 cards
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Practice quiz
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Host live
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Questions
52
Answers
1
How many moles of aluminum are needed to react completely with 1.2 mol of FeO? (*mole ratio*)
1.6 mol
1.2 mole
2.4 mol
0.8 mole
2
Which of the following covalent bonds is most polar?
H-F
H-H
H-C
H-N
3
At STP, how many liters of oxygen will react with 3.6 liters of hydrogen? 2H
2
+ O
2
--> 2H
2
O
3.6 L
2.0 L
1.8 L
2.4 L
4
What is the coefficient for HCl in the equation: Mg + HCl --> MgCl
2
+ H
2
1
2
6
3
5
In the reaction 2CO + O
2
--> 2CO
2
what is the ratio of moles of oxygen to moles to CO
2
?
2:2
1:1
2:1
1:2
6
What is the formula for sodium nitride?
Na2N
NaN
NaN3
Na3N
7
Alkali metals react with water to produce hydrogen and
metal hydroxide
metal oxide
oxygen
salt
8
A molecule with a single covalent bond is:
CO2
N2
Cl2
CO
9
True or false: A double bond involves two pairs of electrons
False
True
10
When a binary compound decomposes, what is produced?
base
2 elements
an oxide
acid
11
A chemical bond that is formed when two atoms share electrons is called a(n):
polyatomic bond
covalent bond
ionic bond
compound
12
If temperature is constant, the relationship between pressure and volume is
direct
inverse
13
How do gas particles respond to an increase in volume?
incrase in kinetic energy and decrease in temperature
increase in kinetic energy and increase in temperature
increase in temperature and increase in pressure
decrease in kinetic energy and decrease in pressure
14
If 3.0 L of helium at 20.0° C is allowed to expant to 4.4 L, what is the new temperature?
157°C
430°C
702°C
-30°C
15
The number of orbitals in the f-sublevel
10
5
14
7
16
Us the activity series to predict the products of: Ag + KNO
3
--> _____
No reaction
AgNO3 + K
AgK + NO3
AgKNO3
17
2 H
2
+ O
2
--> 2 H
2
O [what mass of water is produced from 2.0 mol of H
2
]
18 g
32 g
9 g
36 g
18
What is the coefficient for Cl
2
in the equation: Fe + Cl
2
--> FeCl
3
2
1
4
3
19
Which of the following elements does NOT form an ion with a charge of +1?
potassium
hydrogen
sodium
fluorine
20
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?]
1.1%
93%
2.6%
39%
21
In a rx, the theoretical yield is 548 g and the actual yield is 527 g. What is the % yield?
None of the above
1.04
21
96
22
How much PH
3
is formed if you have 6.2 g of P
4
and 4.0 g of H
2
: P
4
+ 6H
2
--> 4PH
3
270 g
.43 g
45 g
6.8 g
23
When aluminum nitrate reacts with lithium sulfate, the correct products would be:
AlSO4 and Li2(NO3)3
AlLi2 and SO4(NO3)3
Al(NO3)3 and Li2SO<font size="2">4</font>
Al2(SO4)3 and LiNO3
24
If pressure is constant, the relationship between temperature and volume is
direct
inverse
25
Given the equation 2 H
2
+ O
2
--> 2H
2
O ........
19.30 L
8.15 mL
4.075 L
8.15 L
26
What is the chemical name for the compound with the formula Na
2
S?
Lithium Oxide
Magnesium fluoride
Sodium fluoride
Sodium Sulfide
27
What is % yield if 9.9 g Pb(NO
3
)
2
are heated &give 5.5 g of PbO? 2Pb(NO
3
)
2
--> 2PbO + 4NO
2
+ O
2
82%
56%
44%
67%
28
Answer the following gas law problem
.0658 atm
.0329 atm
.0329 kPa
.0658 kPa
29
True or false: N
2
is an example of a compound with a triple bond
False
True
30
What are the missing coefficients for the equation: Cr + Fe(NO
3
)
2
--> Fe + Cr(NO
3
)
3
4,6,6,2
2,3,3,2
2,3,2,3
1,3,3,1
31
How many moles of atoms are there in 5.00 g Ne [atomic mass 20.18 amu]?
6.022E23
100.9
None of the above
0.248
32
The equation Mg + 2HCl --> MgCl
2
+ H
2
is an example of what type of reaction?
double-replacement
single-replacement
decomposition
combination
33
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
34
The reaction 2Fe + 3Cl
2
--> 2FeCl
3
is an example of which type of reaction?
single-replacement
combustion
decomposition
synthesis
35
The equation H
3
PO
4
+ 3KOH --> K
3
PO
3
+ 3H
2
O is what type of reaction?
decomposition
double-replacement
synthesis
single-replacement
36
The octet rule states that, in chemical compounds, atoms tend to have ____
the electron configuration of a noble gas
more electrons than protons
eight electrons in their principal energy level
more protons than electrons
37
What are standard temperature and pressure conditions for gases?
0 K and 760 Torr
0° and 0 torr
-273°C and 1 atm
0°C and 760 torr
38
What are the coefficients that will balance the equation: AlCl
3
+ NaOH --> Al(OH)
3
+ NaCl?
1,3,3,1
1,3,1,3
1,1,1,3
3,1,3,1
39
How many minutes are in one year?
86400
5.256E5
1440
60
40
What are the coefficients that will balance the equation: N
2
+ H
2
--> NH
3
1,1,2
1,3,2
3,1,2
1,3,3
41
One way to increase the pressure of a gas is to
lower the kinetic energy of gas molecules
increase the number of gas particles
decrease temperature
increase volume
42
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
2.88 g
32.0 g
2.00 g
1.00 g
43
How many valence electrons are in an atom of magnesium?
3
4
2
5
44
If pressure of a gas is increased and volume is constant, what will happen to temperature?
increase
stay the same
decrease
45
The only pure substance listed below is
vitamin E
seawater
acetic acid
pizza dough
46
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 8.0 mol of Fe will be formed
the limiting reactant is CO and 3.0 mol of CO2 will form
47
Given the reaction 2H
2
+ O
2
--> 2 H
2
O .......
77 L
61 L
19.25 L
110 L
48
What is a double bond?
Two pairs of electrons shared between two atoms
One pair of electrons shared between two atoms
Two pairs of electrons shared between four atoms
A bond between two atoms and six electrons
49
Cobalt (III) chloride reacts with lithium hydroxide in double replacement: which is a product?
LiCl3
LiCo3
Co(OH)2
Co(OH)3
50
How many valence electrons are in an atom of phosphorus?
2
5
4
3
51
A covalent bond in which electrons are shared unequally is:
Polar
A double bond
Polyatomic
Ionic
52
The total number of orbitals in the second main energy level is
3
4
8
2
