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An block of a certain substance is floating in water with a piece of lead of density 1.13 e4 kg/m3 placed on top of it. The block has 0.900 of its total volume submerged. The piece of lead is removed from the top of the block and attached to the bottom of the block (underwater). Now the volume of the block that is submerged is 0.896 of its total volume. Find the density of the block.

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