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Lon Capa Exam 3 Questions & Answers
True or False: When a chemical process releases heat, it is said to be exothermic. - ANSWERStrue 
 
AnswerTrue or False: Burning a match must be an endothermic process overall because friction was needed to ignite the match. - ANSWERSfalse 
 
AnswerTrue or False: Energy can be defined as the ability to do work. - ANSWERStrue 
 
AnswerTrue or False: All chemical processes are easily reversible - ANSWERSfalse 
 
AnswerTrue or False:In a chemical reaction, the kinetic energy of the system is contai...
- Exam (elaborations)
- • 2 pages •
True or False: When a chemical process releases heat, it is said to be exothermic. - ANSWERStrue 
 
AnswerTrue or False: Burning a match must be an endothermic process overall because friction was needed to ignite the match. - ANSWERSfalse 
 
AnswerTrue or False: Energy can be defined as the ability to do work. - ANSWERStrue 
 
AnswerTrue or False: All chemical processes are easily reversible - ANSWERSfalse 
 
AnswerTrue or False:In a chemical reaction, the kinetic energy of the system is contai...
Lon-Capa HW #1 - Chem 101 Questions & Answers
A dining room table measures 4.3 ft in length. How many inches does this represent (1 ft = 12 in). - ANSWERS52 in 
 
AnswerHow many cups are in a 61-oz pitcher of lemonade? (8 fluid ounces = 1 cup) - ANSWERS7.6 cups 
 
Answer0.154 kg = _______ g = ______ mg - ANSWERS1.54 x 10² g, 1.54 x 10⁵ 
 
Answer1.85 ft = _________ in = __________ cm - ANSWERS2.22 x 10¹ in, 5.64 x 10¹ cm 
 
Answer5.61 m/s = ______ km/hr = _______ mi/hr - ANSWERS2.02 x 10¹ km/hr , 1.25 x 10¹ mi/hr 
 
AnswerBaking soda ...
- Exam (elaborations)
- • 3 pages •
A dining room table measures 4.3 ft in length. How many inches does this represent (1 ft = 12 in). - ANSWERS52 in 
 
AnswerHow many cups are in a 61-oz pitcher of lemonade? (8 fluid ounces = 1 cup) - ANSWERS7.6 cups 
 
Answer0.154 kg = _______ g = ______ mg - ANSWERS1.54 x 10² g, 1.54 x 10⁵ 
 
Answer1.85 ft = _________ in = __________ cm - ANSWERS2.22 x 10¹ in, 5.64 x 10¹ cm 
 
Answer5.61 m/s = ______ km/hr = _______ mi/hr - ANSWERS2.02 x 10¹ km/hr , 1.25 x 10¹ mi/hr 
 
AnswerBaking soda ...
Lon Capa HW #7 - Chem 101 Questions & Answers
TeO₂ - ANSWERSpolar 
 
AnswerNNO - ANSWERSpolar 
 
AnswerNH₃ - ANSWERSpolar 
 
AnswerH₂O - ANSWERSpolar 
 
AnswerSeO₃ - ANSWERSnon-polar 
 
AnswerCF₄ - ANSWERSnon-polar 
 
AnswerWhich of the following compounds exhibit at least one bond angle that is approximately 120°? 
a) SF₂ 
b) SO₃ 
c) SeO₂ 
d) CI₄ 
e) PF₃ 
f) NNO - ANSWERSSO₃, SeO₂ 
 
Answer
- Exam (elaborations)
- • 1 pages •
TeO₂ - ANSWERSpolar 
 
AnswerNNO - ANSWERSpolar 
 
AnswerNH₃ - ANSWERSpolar 
 
AnswerH₂O - ANSWERSpolar 
 
AnswerSeO₃ - ANSWERSnon-polar 
 
AnswerCF₄ - ANSWERSnon-polar 
 
AnswerWhich of the following compounds exhibit at least one bond angle that is approximately 120°? 
a) SF₂ 
b) SO₃ 
c) SeO₂ 
d) CI₄ 
e) PF₃ 
f) NNO - ANSWERSSO₃, SeO₂ 
 
Answer
Lon-capa MCB 101 Questions & Answers
What should you do when you first pick up your inoculating loop? 
a. Sterilize it by dipping it ethanol then passing it through the flame of your Bunsen burner 
b. Flame sterilize it from stem to loopIncorrect Make sure the wire is straight 
c. Sterilize it by dipping it into ethanol 
d. Flame sterilize just the loop - ANSWERSFlame sterilize it from stem to loopIncorrect Make sure the wire is straight 
 
AnswerIf you have immersion oil on your slide, which objective can you not use? 
a. 4X 
b. 1...
- Exam (elaborations)
- • 8 pages •
What should you do when you first pick up your inoculating loop? 
a. Sterilize it by dipping it ethanol then passing it through the flame of your Bunsen burner 
b. Flame sterilize it from stem to loopIncorrect Make sure the wire is straight 
c. Sterilize it by dipping it into ethanol 
d. Flame sterilize just the loop - ANSWERSFlame sterilize it from stem to loopIncorrect Make sure the wire is straight 
 
AnswerIf you have immersion oil on your slide, which objective can you not use? 
a. 4X 
b. 1...
chemistry lon capa term 1 test Questions & Answers
effective nuclear charge - ANSWERSthe nuclear charge felt by an electron when both the actual nuclear charge and the repulsive effects of the other electrons are taken into account 
 
Answeratomic radius - ANSWERSone-half the distance between the nuclei of identical atoms that are bonded together 
 
AnswerValence electrons determine an atom's - ANSWERSchemical properties 
 
Answerwhen a metal and non metal combines, metals - ANSWERSlose electrons to become more positive 
 
Answereffective nuc...
- Exam (elaborations)
- • 1 pages •
effective nuclear charge - ANSWERSthe nuclear charge felt by an electron when both the actual nuclear charge and the repulsive effects of the other electrons are taken into account 
 
Answeratomic radius - ANSWERSone-half the distance between the nuclei of identical atoms that are bonded together 
 
AnswerValence electrons determine an atom's - ANSWERSchemical properties 
 
Answerwhen a metal and non metal combines, metals - ANSWERSlose electrons to become more positive 
 
Answereffective nuc...
Lon Capa HW #4: Chem 101 Questions & Answers
First question was filling out a box determining which reactions created precipitates. - ANSWERS 
 
AnswerBalance the equation: 
 
___ LiAlH₄(s) + __ AlCl₃(s) → ___ AlH₃(s) + __ LiCl(s) - ANSWERS3,1,4,3 
 
AnswerBalance the equation: 
 
___ Fe(s) + ___ Br₂(l) → ___ FeBr₃(s) - ANSWERS2,3,2 
 
AnswerBalance the equation: 
 
___ Al₄C₃ + ___ H₂O → __ Al(OH)₃ + __ CH₄ - ANSWERS1,12,4,3 
 
AnswerBalance the equation: 
__ H₂SO₄(aq) + ___ NaCl(s) → ___ Na₂SO₄(aq) + __...
- Exam (elaborations)
- • 2 pages •
First question was filling out a box determining which reactions created precipitates. - ANSWERS 
 
AnswerBalance the equation: 
 
___ LiAlH₄(s) + __ AlCl₃(s) → ___ AlH₃(s) + __ LiCl(s) - ANSWERS3,1,4,3 
 
AnswerBalance the equation: 
 
___ Fe(s) + ___ Br₂(l) → ___ FeBr₃(s) - ANSWERS2,3,2 
 
AnswerBalance the equation: 
 
___ Al₄C₃ + ___ H₂O → __ Al(OH)₃ + __ CH₄ - ANSWERS1,12,4,3 
 
AnswerBalance the equation: 
__ H₂SO₄(aq) + ___ NaCl(s) → ___ Na₂SO₄(aq) + __...
Lon Capa HW 8 - Chem 102 Questions & Answers
Write the balanced equation for the combustion of isooctane (C₈H₁₈) to produce carbon dioxide and water. Use the smallest possible integers to balance the equation. - ANSWERS2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O 
 
Assuming gasoline is 90.0% isooctane, with a density of 0.692 g/mL, what is the theoretical yield (in grams) of CO₂ produced by the combustion of 1.67 x 10¹⁰ gallons of gasoline (the estimated annual consumption of gasoline in the U.S.)? Remember, there are 3.785 lite...
- Exam (elaborations)
- • 2 pages •
Write the balanced equation for the combustion of isooctane (C₈H₁₈) to produce carbon dioxide and water. Use the smallest possible integers to balance the equation. - ANSWERS2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O 
 
Assuming gasoline is 90.0% isooctane, with a density of 0.692 g/mL, what is the theoretical yield (in grams) of CO₂ produced by the combustion of 1.67 x 10¹⁰ gallons of gasoline (the estimated annual consumption of gasoline in the U.S.)? Remember, there are 3.785 lite...
Lon-capa conceptual Questions & Answers
Coulomb's Law can be applied to: - ANSWERS- two charged objects of any shape, as long as they are much smaller than the distance between them 
 
- point charges 
 
If an object is "neutral", that means the object: - ANSWERShas exactly the same number of protons as it does electrons 
 
The electric field does not depend on... - ANSWERSthe magnitude of the charge q used to probe the field 
 
the electric field exerts... - ANSWERSan electric force on charges 
 
an electric field points... ...
- Exam (elaborations)
- • 2 pages •
Coulomb's Law can be applied to: - ANSWERS- two charged objects of any shape, as long as they are much smaller than the distance between them 
 
- point charges 
 
If an object is "neutral", that means the object: - ANSWERShas exactly the same number of protons as it does electrons 
 
The electric field does not depend on... - ANSWERSthe magnitude of the charge q used to probe the field 
 
the electric field exerts... - ANSWERSan electric force on charges 
 
an electric field points... ...
Lon Capa HW 1 - Chem 102 Questions & Answers
(1.419 - 2.91 - 12.215 ) x (4.59 -1.761 ) - ANSWERS-38.8 
 
(1493 + 24.79 )/0.6677 - ANSWERS2.273 x 10³ 
 
Convert 4.3 miles to centimeters. (look at LC for conversion units) - ANSWERS6.9 x 10⁵ cm 
 
The density of a sample of an unknown solid is 12.1 g/cm³. Convert this density to to units of lb/ft³. (look at LC for conversion units) - ANSWERS755 
 
1 mL is equal to 1 cm³. - ANSWERSTrue 
 
The sum of 32.255 + 2.139 should contain four significant figures. - ANSWERSFalse 
 
The length 10 c...
- Exam (elaborations)
- • 4 pages •
(1.419 - 2.91 - 12.215 ) x (4.59 -1.761 ) - ANSWERS-38.8 
 
(1493 + 24.79 )/0.6677 - ANSWERS2.273 x 10³ 
 
Convert 4.3 miles to centimeters. (look at LC for conversion units) - ANSWERS6.9 x 10⁵ cm 
 
The density of a sample of an unknown solid is 12.1 g/cm³. Convert this density to to units of lb/ft³. (look at LC for conversion units) - ANSWERS755 
 
1 mL is equal to 1 cm³. - ANSWERSTrue 
 
The sum of 32.255 + 2.139 should contain four significant figures. - ANSWERSFalse 
 
The length 10 c...
Lon Capa HW 12 - Chem 102 Questions & Answers
The equilibrium constant (Kp) is 0.16 at a particular temperature for the reaction: 
N₂O₄(g) ⇌ 2NO₂(g) 
 
Given the following sets of initial conditions, what is the net change that must occur for the reaction to reach equilibrium? Does the reaction shift left to reach equilibrium, does the reaction shift right to reach equilibrium or is the reaction at equilibrium at these initial concentrations so no net change will occur? 
a) P(NO₂) = 0.130 atm, P(N₂O₄) = 0.06 atm 
b) P(NO₂) =...
- Exam (elaborations)
- • 3 pages •
The equilibrium constant (Kp) is 0.16 at a particular temperature for the reaction: 
N₂O₄(g) ⇌ 2NO₂(g) 
 
Given the following sets of initial conditions, what is the net change that must occur for the reaction to reach equilibrium? Does the reaction shift left to reach equilibrium, does the reaction shift right to reach equilibrium or is the reaction at equilibrium at these initial concentrations so no net change will occur? 
a) P(NO₂) = 0.130 atm, P(N₂O₄) = 0.06 atm 
b) P(NO₂) =...