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Although fullerenes--spherical molecules made entirely of

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Although fullerenes--spherical molecules made entirely of [#permalink] New post 11 Dec 2005, 15:02
00:00
A
B
C
D
E

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100% (01:09) correct 0% (00:00) wrong based on 1 sessions
Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory syntheses of fullerenes reuires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's curst at tht time these naturally occurring fullerenes were formed.

Which of the following, if true, most seriously undermines the argument?

A) confirming that the shungite genuinely contained fullerenes took careful experimentation

B) some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft

C)The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparantly formed

D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure

E) Shungite itself is formed only under distinctive conditions
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Re: CR fullerenes [#permalink] New post 11 Dec 2005, 19:07
IMO its B, It gives one more reason for formation of fullerenes and that does not relate to the state of the Earth's crust
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Re: CR fullerenes [#permalink] New post 11 Dec 2005, 19:09
IMO its B, It gives one more reason for formation of fullerenes and that does not relate to the state of the Earth's crust
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 [#permalink] New post 12 Dec 2005, 10:48
the oa is D
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 [#permalink] New post 12 Dec 2005, 12:36
I think it is B.
D doesn't make any sense.
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 [#permalink] New post 12 Dec 2005, 13:23
I thought there is something about D but could not understand what? I thought that C was it. :stupid
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 [#permalink] New post 12 Dec 2005, 16:23
i hear ya guys, just keep workin at it
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 [#permalink] New post 12 Dec 2005, 16:32
Conclusion:
the discovery of natural fullerenes should give geologists a test case for evaluating hypotheses about the state of the Earth's curst at tht time these naturally occurring fullerenes were formed.

D says this natural fullerenes is different from the one's tested in laboratary before and therefore property of laboratary fullerenes (distinctive conditions of temperature and pressure) may not apply to them.
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  [#permalink] 12 Dec 2005, 16:32
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