Question 1

Electrometallurgy uses __________ to separate a metal from its ore.

Accepted Answer

A)  solid phase chemical properties
B)  electrical processes
C)  thermal processes
D)  aqueous chemical processes
E)  molten salt processesF) None of the above
G) A) and E)

Question 2

The atmosphere contains about 700. billion metric tons of carbon in the form of carbon dioxide. In the carbon cycle, about 200. billion metric tons of carbon (as carbon dioxide)  enters the atmosphere each year. Assuming that 200. billion metric tons of carbon also leaves the atmosphere annually, how many years does the average carbon atom spend in the atmosphere in each cycle?

Accepted Answer

A)  0.29 years
B)  3.5 years
C)  500. years
D)  140,000 years
E)  More information is needed in order to calculate the answer.F) None of the above
G) B) and D)

Question 3

The kinetic isotope effect is the basis for

Accepted Answer

A)  the radioactivity of tritium.
B)  isolation of pure D 2O.
C)  tritium's high reactivity.
D)  the increase in boiling point when comparing hydrogen, deuterium, and tritium.
E)  nuclear power generation.F) B) and D)
G) A) and D)

Question 4

Hydrometallurgy uses __________ to separate a metal from its ore.

Accepted Answer

A)  solid phase chemical properties
B)  electrical processes
C)  thermal processes
D)  aqueous chemical processes
E)  molten salt processesF) A) and D)
G) A) and C)

Question 5

The process of converting metal sulfides to metal oxides is called

Accepted Answer

A)  roasting.
B)  smelting.
C)  reduction.
D)  leaching.
E)  oxidation.F) A) and E)
G) B) and D)

Exam 22: The Elements in Nature and Industry

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The process of converting metal sulfides to metal oxides is called

Correct Answer
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The kinetic isotope effect is the basis for

Correct Answer
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Electrometallurgy uses __________ to separate a metal from its ore.

Correct Answer
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Hydrometallurgy uses __________ to separate a metal from its ore.

Correct Answer
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Exam 22: The Elements in Nature and Industry

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The process of converting metal sulfides to metal oxides is called

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The kinetic isotope effect is the basis for

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Electrometallurgy uses __________ to separate a metal from its ore.

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Hydrometallurgy uses __________ to separate a metal from its ore.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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