AnswersS1S Chemistry B E4912 - AGNuclear Energy

Nuclear Energy — Cumulative exam Answers

16 verified answers
41
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Ethanol, an organic compound, has the following structural formula.What is the chemical formula for ethanol?

Question illustration
A
CH6O
B
C2H5O
C
C2H5O2
D
C2H6O
42
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Which value is most likely to be the pH of a salt solution that is formed by the reaction of a weak acid and a strong base?

A
2.0
B
6.8
C
7.0
D
8.7
43

A scientist researching methods to convert used motor oil into gasoline would most likely be investigating which process?

A
joining molecules into longer chains
B
breaking molecules into smaller chains
C
changing straight chains into rings
D
changing rings into straight chains
44

The volume of a fixed amount of gas is doubled, and the absolute temperature is doubled. According to the ideal gas law, how has the pressure of the gas changed?

A
It has increased to two times its original value.
B
It has increased to four times its original value.
C
It has decreased to one-half its original value.
D
It has stayed the same.
45

Which value is most likely to be the pH of a salt solution that is formed by the reaction of a strong acid and a weak base?

A
2.0
B
7.0
C
8.0
D
10.0
46

Four substances are tested for different properties. The results of the tests are in the table below.SubstanceCombustibleReactivitySolubility in waterSolubility in etherBoiling point (ºC)WYesYesSolubleInsoluble883XYesNoInsolubleInsoluble2,750YYesNoInsolubleSoluble196ZNoYesSolubleSoluble98Which substance is most likely an alkane?

A
W
B
X
C
Y
D
Z
47

Look at the picture below.What macromolecules make up most of the structure that is shown?

Question illustration
A
carbohydrates
B
lipids
C
nucleic acids
D
proteins
48

A student requires 2.00 L of 0.100 M NH4NO3 from a 1.75 M NH4NO3 stock solution. What is the correct way to get the solution?Use .

Question illustration
A
Measure 114 mL of the 1.75 M solution, and dilute it to 1.00 L.
B
Measure 114 mL of the 1.75 M solution, and dilute it to 2.00 L.
C
Measure 8.75 mL of the 1.75 M solution, and dilute it to 2.00 L.
D
Measure 8.75 mL of the 0.100 M solution, and dilute it to 2.00 L.
49

Which will provide the most direct measure of pH by measuring the hydrogen ion concentration of a solution?

A
pH meter
B
litmus paper
C
phenolphthalein
D
bromthymol blue
50

A student determines that she used 0.0665 mol of sodium hydroxide (NaOH) to completely titrate 25.00 mL of sulfuric acid solution (H2SO4). What is the molarity of the sulfuric acid?

A
0.00133 M
B
0.00266 M
C
1.33 M
D
2.66 M

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