19200 9 18 27216 10 20 37200 25,575,030 51,150,060 6.02214 x 10 23 Such a graphite crystal would be about 1.71 cm high. A circumscribed cylinder around this crystal would have a diameter of about 1.45 cm. Of course, it would weigh twelve grams . Reference: P. Fraundorf, "A multiple of