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Old Mar 4th 2018, 04:49 PM   #1
FISMAQUIM
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Carbon

In 1996, the Nobel Prize in Chemistry was awarded to scientists who discovered a molecule in the form of a soccer ball, called fullerene (C60). Besides this substance, graphite and diamond are also made of carbon. The densities of these substances, not necessarily in the order presented, are: 3.5; 1.7 and 2.3 g / cm 3. Based on the average distances between carbon atoms, choose the appropriate density and calculate the mass, in grams, of a sphere of 2 cm diameter fullerene.

Data:
Mean distance between carbon atoms in nanometers (10 ^ 9 m)
diamond .................. 0.178
fullerene .................... 0.226
graphite

Sphere Volume
V = (4πr) / 3
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