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 Answer |
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The atomic mass of an atom in grammes is a mole of the substance. A mole containes the Avagadro Number of particles.
so, 238 g of uranium contains NA particles = 6.02 x 1023 238 / (6.02 x 1023) g of uranium contains only 1 particle therefore 238 x 1014 / (6.02 x 1023) g of uranium contains 1014 particles (which is 100,000,000,000,000 particles!) = 3.95 x 10-8g of uranium (39.5 ng of Uranium)
Just think what a tiny dust particle that would be… yet it would contain 1014 uranium atoms! |
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