AnswersS1S Chemistry B E4912 - AGNuclear Energy

Nuclear Energy — Cumulative exam Answers

3 verified answers
1
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Which will reduce the possible environmental damage associated with mining uranium?

A
installing newer water recycling systems in older power plants
B
increasing the reprocessing of used fuel for reuse
C
building additional fission nuclear power plants
D
developing better places to store radioactive wastes
2
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What is the final, balanced equation that is formed by combining these two half reactions?

Question illustration
A
Upper C u superscript 2 plus, plus upper N upper O subscript 3 superscript minus, plus 4 e superscript minus, plus 2 upper H superscript plus right arrow upper C u plus upper N upper O subscript 2 superscript minus, plus upper H subscript 2 upper O.
Option A
B
Upper C u plus upper N upper O subscript 3 superscript minus, plus 2 upper H superscript plus right arrow upper C u superscript 2 plus, plus upper N upper O subscript 2 superscript minus, plus upper H subscript 2 upper O.
Option B
C
2 upper C u plus upper N upper O subscript 3 superscript minus plus 2 upper H superscript plus right arrow 2 upper C u superscript 2 plus, plus upper N upper O subscript 2 superscript minus, plus upper H subscript 2 upper O.
Option C
D
Upper C u plus upper N upper O subscript 3 superscript minus, plus 2 upper H superscript plus right arrow upper C u superscript 2 plus, plus upper N upper O subscript 2 superscript minus, plus 2 upper H subscript 2 upper O.
Option D
3

Which molecule is an aromatic hydrocarbon?

A
Two central carbons are double bonded to each other; the pair is single bonded to C H 3 above left and right, and to H below left and right.
Option A
B
A skeletal model has line segments that slant up, down, up, and up again in a triple bond.
Option B
C
Two hexagon rings with carbons at each corner have alternating double bonds and share one side. H is single bonded to all the C's except the ones on the shared side.
Option C
D
Two carbons are triple bonded to each other; each has a single bond to the outside.
Option D
4

What is a characteristic of branched chained alkanes?

A
They have one or more rings of carbon atoms.
B
They have carbon atoms that are double-bonded to other carbon atoms.
C
They have more than two carbons that are bonded to only one other carbon.
D
They have carbons bonded in a single row from one end of the molecule to the other end of the molecule.
5

Which best describes the reducing agent in the reaction below? Cl2(aq) + 2Br–(aq) 2Cl–(aq) + Br2(aq)

Question illustration
A
Bromine (Br) loses an electron, so it is the reducing agent.
B
Bromine (Br) gains an electron, so it is the reducing agent.
C
Chlorine (Cl) loses an electron, so it is the reducing agent.
D
Chlorine (Cl) gains an electron, so it is the reducing agent.
6

Which type of macromolecule is made up of subunits that are called amino acids?

A
carbohydrate
B
lipid
C
nucleic acid
D
protein
7

Which statement describes one way that RNA differs from DNA?

A
One is a protein, and the other is a nucleic acid.
B
They contain different five-carbon sugars and a different nitrogenous base.
C
They are both carbohydrates, but one is a polysaccharide.
D
One provides energy, and the other carries genetic information.
8

A compound accepts electrons from another substance to form a covalent bond. Which term best describes this compound’s behavior?

A
Lewis acid
B
Arrhenius base
C
Bronsted-Lowry acid
D
Bronsted-Lowry base
9

How do aromatic hydrocarbons differ from alkenes?

A
Aromatic hydrocarbons are unsaturated, and alkenes are saturated.
B
Alkenes are saturated, and aromatic hydrocarbons are unsaturated.
C
Aromatic hydrocarbons are flat, geometric molecules, and alkenes are not.
D
Alkenes are flat, planar molecules, and aromatic hydrocarbons are not.
10

A chemist dilutes a 1.0 mL sample of 2.0 M KNO3 by adding water to it. If the concentration of the solution that is obtained is 0.0080 M, what is its volume?Use .

Question illustration
A
125 mL
B
250 mL
C
500 mL
D
2,000 mL
11

Which of the following is a characteristic of a typical carbon atom?

A
Carbon has a high melting point.
B
Carbon dissolves easily in water.
C
Carbon can form single, double, and triple bonds.
D
Carbon is one of the least common elements in the universe.
12

Which is an energy conversion that occurs during cellular respiration?

A
ADP à ATP
B
FADH2 à FAD
C
pyruvate à glucose
D
light energy à chemical energy
13

The brothers pictured below are identical twins.The boys in this picture look alike because their bodies contain identical

Question illustration
A
carbohydrates.
B
lipids.
C
nucleic acids.
D
proteins.
14

Which factor influences both solubility and the rate of dissolution?

A
pressure
B
temperature
C
particle size
D
nature of solvent
15

A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to –3.5°C. If there is no volume change in the tire, what is the pressure after the temperature change?Use .

Question illustration
A
0.75 atm
B
0.89 atm
C
1.1 atm
D
1.3 atm
16

Which statement best describes salts?

A
Salts form from hydrogen ions and hydroxide ions in neutralization reactions.
B
Most salts do not dissociate when dissolved in water.
C
Most salts form solutions that are neutral.
D
Solutions of salt and water conduct electricity.
17

Several substances are labeled on the pH scale below.Which substance has the lowest [H+] concentration but is still considered an acid?

Question illustration
A
milk
B
blood
C
gastric fluid
D
household lye
18

The molar heat of fusion for water is 6.01 kJ/mol. How much energy is released when 36.8 g of water freezes at its freezing point?Use .

Question illustration
A
6.12 kJ
B
12.3 kJ
C
108 kJ
D
221 kJ
19

The equivalence point in a titration refers to the point when

A
the mL of the acid equals the mL of the base.
B
the molarity of the acid used in the reaction equals the molarity of the base used in the reaction.
C
the number of moles of one reactant reacts completely with the moles of the other reactant.
D
the acid in the flask turns clear.
20

Which radiation detection method creates visible trails that can show the direction of ionizing particles?

A
Geiger counter
B
scintillation counter
C
film badge
D
cloud chamber

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