How Many Carbon Atoms Does It Take to Produce a Layer

question 21

Multiple Choice

How many carbon atoms does it take to produce a layer one atom deep that is the size of the period at the end of the next sentence? Assume the area covered by the period is 0.2 mm² and that one carbon atom has a diameter of 160 pm and covers an area of 0.02 nm².

• A) 1.0* 10¹²
• B) 1.0 * 10¹¹
• C) 1.0 *10⁷
• D) 1.0 * 10¹³
• E) 2.0 * 10⁶

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