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What is the physical size of a kilogram of uranium?

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Well, it depends on what shape you put it in, but if you had a 1kg sphere of pure Uranium it would be 4.6cm wide - a bit bigger than a golf ball (4.3 cm). read more

Now, we know that the cube of 3 is 27, and the cube of 4 is 64. So, the likely cube root of 50 is a bit more than half way between 3 and 4. So, let's take a stab at about 3.7, and say that a kg of uranium could be a 3.7cm cube, or a 37mm cube. Heavy, man. read more

Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver. The Earth's crust from the surface to 25 km (15 mi) down is calculated to contain 10 17 kg (2 × 10 17 lb) of uranium while the oceans may contain 10 13 kg (2 × 10 13 lb). read more

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