Graphite has h.c.p. arrangements of carbon atoms and the parallel planes are \( 3.35 \AA \) apar...

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Graphite has h.c.p. arrangements of carbon atoms and the parallel planes are \( 3.35 \AA \) apart. Determine density of graphite:
(a) \( 2.46 \mathrm{~g} / \mathrm{cc} \)
(b) \( 0.41 \mathrm{~g} / \mathrm{cc} \)
(c) \( 1 \mathrm{~g} / \mathrm{cc} \)
(d) \( 1.41 \mathrm{~g} / \mathrm{cc} \)
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