Question #d3d97

1 Answer
Doc048 · Truong-Son N.
Sep 18, 2017

#("Number of carbon atoms")/"mm" = (7 xx 10^6" C")/"mm"#

Explanation:

If 1 carbon atom diameter = 150 picometers, then the problem is a conversion into number of carbon atoms per millimeter ...

#("1 carbon atom")/(150cancel"pm") xx (10^12cancel"pm")/cancel("m") xx (10^(-3)cancel"m")/"mm"#

#= (7xx10^6 " carbon atoms")/("mm")#

So, 1 mm diameter graphite dot = #7xx10^6# carbon atom diameter

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