If a block of volume 1.00 × 10-3 m3 is suspend from a spring scale and is completely submerged in the water, the scale reads 10.0 N. If the similar block is then placed in an unknown liquid, unattached to a scale, it floats with 2/3 of its volume submerged in the unknown fluid. The density of water is around 1.00 × 103 kg/m3. Find out the density of the unknown liquid.