A geode is a hollow rock with a solid shell and an air-filled interior. Suppose a particular
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A geode is a hollow rock with a solid shell and an air-filled interior. Suppose a particular geode weighs twice as much in air as it does when completely submerged in water. If the density of the solid part of the geode is 2500 kg/m3, what fraction of the geode's volume is hollow?
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