The Period at the End of This Sentence Has an Area

question 15

Multiple Choice

The period at the end of this sentence has an area of approximately 0.2 mm².One carbon atom,having a diameter of about 160 pm,covers an area of about 0.02 nm².How many carbon atoms would be required to produce a one-atom-deep layer that covers 0.2 mm²?

• A)1 * 10¹²
• B)2 * 10¹¹
• C)1 * 10⁷
• D)1 * 10¹³
• E)2 *10⁶

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Definitions:

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Long-term Memory

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The ability to focus one's auditory attention on a particular stimulus while filtering out a range of other stimuli, as if at a noisy party.