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Biblioteka

Semester 2 Exam

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Posljednje ažuriranje almost 4 years ago
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Pitanje 1
1.

Iron rusts according to the following equation: __ Fe(s) + __ O2(g) → __ Fe2O3(s)

Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

Pitanje 2
2.

Given the following chemical equation.

__ Fe(s) + __ O2(g) → __ Fe2O3(s)

Identify the type of chemical reaction.

Pitanje 3
3.

Given the following chemical equation.

____ C5H12(g) →____ C(g) + ____ CH4(g)

Identify the type of chemical reaction.

Pitanje 4
4.

Given the following chemical equation.

____ Sr(s) + ____ F2(g) →____ SrF2(s)

Identify the type of chemical reaction.

Pitanje 5
5.

Given the following chemical equation.

____ Al2(CO3)3(s) → ____ Al2O3(s) + ____ CO2(g)

Identify the type of chemical reaction.

Pitanje 6
6.

Balance each chemical equation.

____ Ni2S3(s) → ____ Ni(s) + ____ S(s)

Balance the equation(type your answer in as 5, 6, 7 separate the coefficients with commas).

Pitanje 7
7.

Given the following chemical equation.

____ Ni2S3(s) → ____ Ni(s) + ____ S(s)

Identify the type of chemical reaction.

Pitanje 8
8.

Given the following chemical equation.

_____C3H6(g) + ______O2(g) →______CO(g) + ______H2O(l)

Identify the type of chemical reaction.

Pitanje 9
9.

Given the following chemical equation.

_____C3H6(g) + ______O2(g) →______CO(g) + ______H2O(l)

Which substances are gases?

Pitanje 10
10.

Given the following chemical equation.

__Pb + __FeSO4 🡪 __PbSO4 + __Fe

Identify the type of chemical reaction.

Pitanje 11
11.

Balance each chemical equation.

__RbNO3 + __BeF2 🡪 __Be(NO3)2 + __RbF

Balance the equation(type your answer in as 5, 6, 7, 8 separate the coefficients with commas).

Pitanje 12
12.

Balance each chemical equation.

__Na3PO4 + __KOH 🡪 __NaOH + __K3PO4

Balance the equation(type your answer in as 5, 6, 7, 8 separate the coefficients with commas).

Pitanje 13
13.

EXTRA CREDIT:

__AlI3 + __Mn(SO3)2 🡪 __Al2(SO3)3 + __MnI4

Balance the equation(type your answer in as 5, 6, 7, 8 separate the coefficients with commas).

Pitanje 14
14.

All of the following are equal to Avogadro's number EXCEPT ____.

Pitanje 15
15.

1 mole CaCl₂ = 6.02 x1023 ______

Pitanje 16
16.

1 mole N₂ = 6.02 x1023 ______

Pitanje 17
17.

1 mole Cu = 6.02 x1023 ______

Pitanje 18
18.

Law of conservation of mass states...

Pitanje 19
19.

Molar Mass is

Pitanje 20
20.

What does avogadro's number tell us?

Pitanje 21
21.

What information might be most useful for me to find molar mass?

Pitanje 22
22.

What is Avogadro's number?

Pitanje 23
23.

Avogadro's number of representative particles is equal to one ____.

Pitanje 24
24.

What is the molar mass of methane(CH4)?

Pitanje 25
25.

Given 81.20 grams of CaF2 how many formula units in the sample?

Pitanje 26
26.

What is the molar mass of acetic acid: HCH3COOH?

Pitanje 27
27.

Given 5.012x1024 atoms of silicon, how many grams of silicon are in the sample?

Pitanje 28
28.

Which combination of bonds is present in this molecule?

Pitanje 29
29.

Which exception to the octet rule is shown by beryllium in this molecule?

Pitanje 30
30.

Which one will NOT form a diatomic molecule?

Pitanje 31
31.

Which type of bond has one pair of electrons shared between atoms?

Pitanje 32
32.

In the compound PCl3, how many total valence electrons are present?

Pitanje 33
33.

Which type of bond has an electronegativity difference greater than 1.7?

Pitanje 34
34.

How many pairs of bonding electrons are in a molecule that displays sp2 hybridization?

Pitanje 35
35.

How many pairs of bonding electrons are present in a molecule that displays trigonal bipyramidal molecular shape?

Pitanje 36
36.

What molecular shape does the compound CH4 have?

Pitanje 37
37.

Which is the correct formula for the compound dinitrogen monoxide?

Pitanje 38
38.

Which is the formula for the compound sulfur hexachloride?

Pitanje 39
39.

Name the compound NS2

Pitanje 40
40.

Name the compound PS3

Pitanje 41
41.

Give the formula for the covalent compound tetrasulfide heptaoxide

Pitanje 42
42.

What does the prefix nona- represent?

Pitanje 43
43.

How many sigma bonds in the molecule?

Pitanje 44
44.

Essay--Write the answer to one essay question in the space provided below.

FCA’s 1. Write in complete sentences and paragraph form.

2. Use Chapter 8 terminology to answer questions(example: hybridization, double bond, lone pairs, etc...).

3. Provide inferences, other thoughts, or personal experiences in your answer whenever possible.

#1 Explain why is PCl5 an exception to the octet rule, while PCl3 is not?

#2 Vanderwaal's forces, Dipole-Diple moment, and Hydrogen bonding are used to explain bonding between covalent compounds. Explain which is the strongest of the three bonding forces and how the molecules bond according to this force.

#3 Explain why Lithium(III) chloric is not a correct name for the ionic compound formed between lithium and chlorine.

#4 Explain why it is not possible to write a correct chemical formula for the compound nitrogen hydride.

Pitanje 45
45.

Which is true of the model of metallic bonding shown in this figure?

Pitanje 46
46.

Which is the charge that results when oxygen becomes an ion?

Pitanje 47
47.

Which is a property of substances that exhibit metallic bonding?

Pitanje 48
48.

Which is a physical property of ionic compounds in their solid state?

Pitanje 49
49.

Which is the correct formula for the compound formed between beryllium and nitrogen?

Pitanje 50
50.

Which is the correct formula for the compound formed between lithium and sulfur?

Pitanje 51
51.

Which is the correct formula for the compound Manganese (III) Fluoride?

Pitanje 52
52.

Which is the correct name for the compound Fe2S3?

Pitanje 53
53.

Which is the correct name for the compound CaClO3?

Pitanje 54
54.

Which is the correct name for the compound Na3PO4?

Pitanje 55
55.

The name of the anion PO3-3 is ____________________ ion.

Pitanje 56
56.

The name of the anion NO2-1 is ____________________ ion.

Pitanje 57
57.

Write the chemical names for each of the following compound CaF2.

Pitanje 58
58.

EXTRA CREDIT: Write the chemical name for the following compound NH4F.

Pitanje 59
59.

Write the chemical formula for the following ionic compound: Barium iodide

Pitanje 60
60.

EXTRA CREDIT:

__C3H4O3 + __O2 🡪__CO2 +__H2O

Balance the equation(type your answer in as 5, 6, 7, 8 separate the coefficients with commas).