Final Exam

Navigation » List of Schools » West Los Angeles College » Chemistry » Chem 051 – Fundamentals of Chemistry » Winter 2021 » Final Exam

Need help with your exam preparation?

Existing Quiz Clients Login here

Below are the questions for the exam with the choices of answers:

Try The Exam

Question #1

Which represents the greatest mass?

A 1.0 mol Cu

B 1.0 mol Zn

C 1.0 mol Fe

D all the same

E 1.0 mol Al

Question #2

The oxidation product of a primary alcohol is

A an alkene.

B an acid.

C an ether.

D a ketone.

E a tertiary alcohol.

Question #3

The most characteristic reaction of the alkenes is

A substitution.

B reduction.

C addition and elimination.

D oxidation.

E addition.

Question #4

If temperature and pressure are held constant, the volume and number of moles of a gas are

A directly proportional

B equal

C independent of each other

D not enough information given

E inversely proportional

Question #5

How many electrons are in the third principal energy level (n = 3) of one atom of Fe?

A 14

B 8

C none of these

D 18

E 2

Question #6

At 1 atm of pressure and a temperature of 0°C, which phase(s) of H2O can exist?

A water only

B ice only

C water vapor only

D ice and water

E ice and water vapor

Question #7

Perform the indicated conversion: 2.63 X 103 cal = _______________ J

A 1.10 X 104 J

B 629 J

C 1.59 x 10–3 J

D 11.0 J

E 6.29 X 105 J

Question #8

Which of the following is an incorrect designation for an atomic orbital?

A 2p

B 1s

C 2d

D 3s

E 4f

Question #9

True or false? Reduction is a gain of electrons.

A TRUE

B FALSE

Question #10

If you mix 20.0 mL of a 3.00 M sugar solution with 30.0 mL of a 5.30 M sugar solution, you will end up with a sugar solution of ________.

A 7.30 M

B 4.15 M

C 10.95 M

D 4.38 M

E 0.166 M

Question #11

You have 25.00 mL of a 0.1000 M sugar solution. How much water must be added to make a 0.01042 M solution?

A 214.9 mL

B 22.4 mL

C 239.9 mL

D 26.1 mL

E 2.61 mL

Question #12

The alkaline earth metals have how many valence electrons?

A 7

B 8

C 3

D 1

E 2

Question #13

True or false? The law of conservation of enery states that energy can be converted from one form to another but can be neither created nor destroyed.

A TRUE

B FALSE

Question #14

Which of the following has a double C-O bond and a single C-O bond?

A aldehyde

B alcohol

C amine

D ketone

E ester

Question #15

The state of matter for an object that has a definite volume but not a definite shape is

A liquid

B mixed

C elemental

D gaseous

E solid

Question #16

A solution with a pH of 2.17 is

A neutral

B acidic

C basic

Question #17

The number of protons in a given nucleus determines the

A atomic number.

B number of isotopes.

C mass number.

D number of electrons.

E number of protons.

Question #18

An aqueous solution of sodium carbonate is reacted with an aqueous solution of calcium chloride.

Identify the solid in the balanced equation.

A CaCO3

B CaCl2

C There is no solid formed when the two solutions are mixed.

D NaCl

E Na2CO3

Question #19

A given set of d orbitals consists of ______________ orbital(s).

A 5

B 6

C 3

D 1

Question #20

The number of significant figures in 0.074100 × 10–4 is

A 5

B 3

C 4

D 7

E 6

Question #21

The air in the inner tube of the tire of a racing bike has a pressure of 110.2 psi. Convert this pressure to atm.

A 7.497 atm

B 1.088 atm

C 1620 atm

D 0.1450 atm

E 110.2 atm

Question #22

Choose the state of water in which the water molecules are farthest apart on average.

A steam (vapor)

B all the same

C liquid

D ice (solid)

Question #23

If you were to heat pentanoic acid and 2-butanol with a strong acid, you would most likely discover in your flask:

A an aldehyde

B an amine

C an ester

D an alkane

E a ketone

Question #24

The number of unpaired electrons in a nitrogen atom is

A 4

B 5

C 7

D 3

E 6

Question #25

A solution has [OH–] = 2.8 X 10–7 M. The [H+] in this solution is

A 2.8X 107 M

B 3.6 X 107 M

C 2.8 X 107 M

D 3.6 X 10–8 M

Question #26

A solution with a pH of 2 is how many times more acidic as a solution with a pH of 3?

A 0.7

B 2

C 100

D 5

E 10

Question #27

Name the following:

CH3C ≡ CCH2CH2Cl

A 2-chloro-5pentyne

B 5-chloro-2pentyne

Question #28

True or false? The calorie is defined as the amount of energy (heat) required to raise the temperature of one gram of water by one degree Celsius.

A FALSE

B TRUE

Question #29

The reaction HCl(aq) + KOH(aq) → H2O(l) + KCl(aq) is a(n) ______________ reaction.

A oxidation-reduction

B none of these

C acid-base

D precipitation

E single-replacement

Question #30

True or false? N2 is an example of a covalent bond.

A FALSE

B TRUE

Question #31

Which of the following compounds contains an ionic bond?

A NaCl

B HCl(g)

C O2

D CCl4

E SO2

Question #32

The oxidation product of a secondary alcohol is

A a tertiary alcohol.

B a ketone.

C an acid.

D an aldehyde.

E an ester.

Question #33

When an electron in the ground state absorbs energy, it goes to a(n) ______________ state.

A ionic

B stable

C excited

D frenetic

E lower

Question #34

The complete combustion of heptane, C7H16, which is a volatile hydrocarbon, yields carbon dioxide and water:
__ C7H16 + __ O2 → __ CO2 + __ H2O
The coefficient of oxygen in the balanced equation is

A 9

B 8

C 15

D 11

E 13

Question #35

The best answer to report for 131.00 – 31.9904 is

A 99.010.

B 99

C 99.0.

D 99.01.

E 99.0096.

Question #36

The total mass of a solution is 171.5 g. The solvent mass is 125.2 g. What is the mass percent of the solute?

A Not enough information is given.

B 38.0%

C 27.0%

D 73.0%

E 18.1%

Question #37

Which of the following compounds contains one or more covalent bonds?

A CO2

B NaCl

C BaBr2

D CaO

E Cs2O

Question #38

The elements chlorine and iodine have similar chemical properties because they

A are both metals

B have the same number of electrons in their outer energy levels

C have the same number of stable isotopes

D are in the same chemical period

E none of these

Question #39

Which of the following will yield a carboxylic acid upon oxidation?

A a cycloalkane

B a secondary alcohol

C a ketone

D tertiary alcohol

E an aldehyde

Question #40

Chemical reactions involving alkanes in which hydrogen atoms are removed and the product is an unsaturated hydrocarbon are called

A substitution reactions.

B addition reactions.

C dehydrogenation reactions.

D polymerization reactions.

E combustion reactions.

Question #41

A substance that, when dissolved in water, produces a solution that conducts electric current very efficiently is called

A a strong ion

B an electrical solute

C a strong electrolyte

D none of these

E a weak electrolyte

Question #42

How many protons, electrons, and neutrons, respectively, does 127I have?

A 53, 127, 74

B 53, 53, 74

C 53, 74, 53

D 74, 53, 127

E 53, 53, 127

Question #43

H2CCHCH2N(CH3)2 is

A an alkyne and a secondary amine.

B an alkene and a primary amine.

C an alkyne and a tertiary amine.

D an alkene and a tertiary amine.

Question #44

There are three isotopes of carbon differing with respect to

A atomic number.

B number of protons.

C nuclear charge.

E electron configuration.

F neutrons.

Question #45

True or false? Arrhenius postulated that acids produce hydrogen ions in aqueous solution, whereas bases produce hydroxide ions.

A TRUE

B FALSE

Question #46

True or false? CH4 has ionic bonds.

A FALSE

B TRUE

Question #47

The chemical formula for iron(III) sulfide is

A Fe3(SO3)2.

B Fe2(SO3)3.

C Fe2S3.

D Fe2(SO4)3.

Question #48

3.03 mol of CO2 at STP will occupy

A 8.93 × 10–2 L

B 67.9 L

C 67.9 g

D 74.1 L

E 33.9 L

Question #49

Oxidation of a primary alcohol results in a(n) __________ and oxidation of a secondary alcohol results in a(n) _________.

A ester, ether

B carboxylic acid, amine

C aldehyde, ketone

D ketone, aldehyde

E amine, carboxylic acid

Question #50

True or false? The equation N2(g) + 3H2(g) → 2NH3(g) can be interpreted by saying that 1 mol of N2 reacts with 3 mol of H2 to form 2 mol of NH3.

A FALSE

B TRUE

Question #51

Which of the following statements is/are correct?

A In an acidic solution, [H+] > [OH-]

B In a neutral solution, [H+] = [OH-]

C In a basic solution,[OH-] > [H+]

D In an acidic solution, [H+] > [OH-], In a basic solution,[OH-] > [H+], and In a neutral solution, [H+] = [OH-] .

E None of the above statements are correct.

Question #52

The formula for potassium carbonate is

A P2C.

B K2CO3.

C P2CO3.

D Po2CO3.

E K2C.

Question #53

A 2.2-mol sample of KClO3 was decomposed according to the equation 2KClO3(s) → 2KCl(s) + 3O2(g) How many moles of O2 are formed?

A 1.8 mol

B 1.5 mol

C 3.3 mol

D 2.2 mol

E 1.1 mol

Question #54

1s22s22p63s23p64s23d7 is the electron configuration for which of the following atoms?

A Co

B Ar

C Cr

D Ca

E Fe

Question #55

Heat is typically measured in

A °C

B joules

C °F

D grams

Question #56

Calculate the heat given off when 101.4 g of copper cools from 155.0oC to 23.0oC. The specific heat of copper is 0.385 J/g oC.

A none of these

B 5.15 × 103 J

C 3.48 × 104 J

D 6.05 × 103 J

E 8.98 × 102 J

Question #57

In the reaction 2Cs(s) + Cl2(g) → 2CsCl(s), the chlorine is ______________.

A synthesized

B reduced

C electrolyzed

D oxidized

Question #58

Identify the type of organic compound shown: (CH3)3N

A ester

B ketone

C aldehyde

D amine

Question #59

Which of the following elements is most similar to chlorine?

A Na

B Hg

C Br

D H

E He

Question #60

Which particle has the smallest mass?

A electron

B neutron

C helium nucleus

D proton

Try The Exam

Fresh Grad Lands Job as Real Estate Agent With Help from Professional Writers

Need help with your exam preparation?

Below are the questions for the exam with the choices of answers:

Christian S.

Tyra

Linda

Manush

We accept payment