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Chem 511 Semester 2 Final Review Flashcards | StudBud
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Chem 511 Semester 2 Final Review
Chem 511 Semester 2 Final Review
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1
What is the Formula Mass of K
3
PO
4
49
185
348
212
2
What is the correct formula for Lithium Bromide
BrLi
Li2 Br
LiBr
LiBr2
3
Which elements form Cations?
nonmetals
hydrogen
carbon
metals
4
In one mole of MgSO
4
, how many moles of Sulfur are there?
1
4
3
2
5
What is the correct name for H
2
O
2
dihydrogen dioxide
oygen hydride
hydrogen oxide
dioxygen dihyride
6
Identify the type of chemical reactions
Double replacement
Synthesis
Single replacement
Decomposition
7
Which of the following atoms will lose electrons to become stable?
Lithium
Sulfur
Xenon
Nitrogen
8
A substance that is soft, flaky. It melts at a low temperature and doesn't conduct electricty when dissolved
A metallic substance
A black cat
An ionic substance
A covalent substance
9
What is the formula mass of calcium bromide?
79.90 g/mol
199.88 g/mol
119.98 g/mol
40.08 g/mol
10
How many electrons will P
-3
have?
18
20
16
15
11
Salting streets and roads in winter works because of
boiling point depression
freezing point elevation
boiling point elevation
freezing point depression
12
Which of the following are subatomic particles?
protons, nutrinos, electrons
protons, neutrons and electrons
protons , neutrons , quarks
protons, neutrons, electricity
13
If you have 2.87 moles of Ca(OH)
2
how many molecules do you have?
4.77 x 10 -24
5.02 x 1019
6.02 x 1023
1.73 x 1024
14
Predict the products of this reaction.
CO2 + H2O
CO2 + H2
C2H2 + O2
C + H2O
15
Balance this equation
FeO2 + C ---> Fe + CO2
Fe2O3 + C ---> Fe2O3 + C
Fe2O3 + C ---> Fe2 + CO3
2Fe2O3 + 3C ---> 4Fe + 3CO2
16
Colligative Properties depend on
mass
moles
concentration
volume
17
Valence electrons are
all of these
involved in bonding
lost or gained or shared in a chemical bond
the outermost electrons
18
Predict the products of the following reaction
Pb2 + Br
Pb2 + Br5
Pb + Br
Pb + Br2
19
If you produce 56.89 g of water, how many grams of hydrogen would you need?
5.31 g of H2
6.38 g of H2
2.02 g of H2
3.15 g of H2
20
When balancing equations, you may change...
neither subscripts nor coefficients
subscripts
coefficients
both subscripts and coefficients
21
Balance the Following Equation?
None of the Above
C5H12 + 8O2 ---> 5CO2 + 6H2O
C5H12 + O2 ---> 5CO2 + 6H2O
C5H12 + O2 ---> 5CO2 + H2O
22
You have a stock solution of 6 M HCl and 37.5 ml and you want to dilute it to 0.1 M. What volume will you end with?
225 ml
62.5 ml
2250 ml
0.016 ml
23
A metal and nonmetal will form a/an
covalent bond
metallic
polyatomic bond
ionic bond
24
Which of following equation describes single displacement reaction?
AB + C --> AC + B
AB + CD --> AC + BD
A + B --> AB
AB --> A + B
25
What is the percent composition of hydrogen in Water?
10%
12%
11.11 %
26
If you have 0.89 moles of Aluminum oxide, how many grams do you have?
100.52 g
90.74 g
52.49 g
38.35 g
27
If you have 8 moles of oxygen how many moles of water will you product
16 moles water
4 moles of water
1 mole of water
8 moles of water
28
What is the name of CuCl
2
?
copper II chloride
copper dichloride
copper II chlorate
copper chloride
29
What is the correct formula for Sulfur Trioxide
3SO
SO3
SO
S3 O
30
How many valence electrons does Calcium have ?
1
4
2
3
31
If you have 3.56 moles of H
2
, how many grams of oxygen will you need
1.78 g O2
56.96 g of O2
28. 48 g O2
32.00 g of O2
32
If you add salt to water, the boiling point of the solution will
increase
not change
decrease
33
You have 68.42 g of Lithium Hydroxide and 325mL. What is the Molarity of this solution ?
4.75 M
2.86 M
0.0088 M
8.8 M
34
Two nonmetals will form a
metallic bond
ionic bond
covalent bond
polyatomic bond
35
What Movie are Jonsey and Ripley named after?
Alien
Legend
Blade Runner
The Matrix
36
What is the correct name for Na
2
SO
4
?
sodium sulfide
disodium sulfide
disodium sulfate
sodium sulfate
37
Chemistry is the study of :
matter and the changes it undergoes
Heat and electricity
Energy and light
Living things
38
What is the density of a substance that has a volume of 24.5 cm
3
and a mass of 2500 mg in g/cm
3
102.04 g/cm3
The 0.10 g/cm3
0.0098 g/cm3
61250 g/cm3
39
What will the charge be on a Nitrogen atom once it is stable?
-2
+2
-3
+3
40
Cl
-
has how many electrons
35.45
18
17
19
41
Balance the equation.
4, 3, 2
3, 4, 2
2, 1, 1
2, 2, 1
42
what's a mole?
2.77 moles
one mole-cule
the stuff on your face
quantity of matter=to 6.002 x 10E23 atoms=molar mass
43
In a closed system, the mass of the reactants is equal to
the mass of the products
the mass before the reaction
the mass of the substance
the mass of the open system
44
If you have 23.78 g of Potassium hydroxide, how many moles do you have?
0.59 moles
0.42 g
0.42 moles
0.59 g
45
Predict the products of this reaction ?
3 CaO
CaO
2 CaO
2 CaO2
46
What does Mr. Green ( Dr. Marshall's husband) call the cats?
Flying Monkeys
All of these are correct
Familiars
47
Which of the following is NOT an element that forms diatomic molecules
Flourine
Carbon
NItrogen
Oxygen
48
The only elements that are both neutral and stable are:
Alkaline Earth Metals
Halogens
Alkali Metals
Noble Gases
49
Atoms in the same group have the same
neutrons
Oxidation number
valence electrons
valence protons
50
A stable atom has a/an
An empty valence shell of electrons
an equal number of protons and neutrons
A full valence shell of electrons
an equal number of protons and electrons
