Posted: January 24th, 2017
. If you use HALF of the pencil to write a paper, how many carbon atoms are left in your pencil?
A pencil has about 1.03 grams of graphite in it, which is made (in theory) of pure carbon. If you use HALF of the pencil to write a paper, how many carbon atoms are left in your pencil?
|
a
|
2.58×1022 atoms |
|
b
|
3.2×1022 atoms |
|
c
|
6.2×1023 atoms |
|
d
|
5.16×1022 atoms |
|
e
|
1.03×1023 atoms |
|
f
|
2.21×1023 atoms |
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