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Hunus
 3 years ago
Best ResponseYou've already chosen the best response.0A rough estimate of the radius of a nucleus is provided by the formula r kA1/3, where k is approximately 1.3 1013 cm and A is the mass number of the nucleus. Estimate the density of the nucleus of 127I (which has a nuclear mass of 2.1 1022 g) in grams per cubic centimeter. Compare with the density of solid iodine, 4.93 g cm3

Hunus
 3 years ago
Best ResponseYou've already chosen the best response.0I solved and got 1.80 x 10^14 but that doesn't seem correct.

Hunus
 3 years ago
Best ResponseYou've already chosen the best response.0It seems like a rather large number when the density of solid Iodine is 4.93 g/cm ^3 :o

Jemurray3
 3 years ago
Best ResponseYou've already chosen the best response.3Indeed it does. That would imply that most of solid iodine is empty space, wouldn't it? :)

Jemurray3
 3 years ago
Best ResponseYou've already chosen the best response.3Imagine what would happen to an object if all of its nuclei were squished together instead of being surrounded by empty space. Such an object is called a neutron star, and its density is immense.
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