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Calculate the ratio of the density of coal ash to the density of the water (Specific gravity of coal ash Gs)
Known values:
A 90 g sample of coal ash.
Total mass of pycnometer (a density bottle) with coal ash inside and filled with water = 720 g.
Mass of clean pycnometer filled only with water = 670 g
Solution:
Step 1: Find the mass of the water displaced by coal ash (i.e , same volume V) using Archimedes' principle.
Step 2: Specific gravity of coal ash calculation
here:
ρs the density of the dry coal ash
ρw the density of the water displaced by coal ash inside pycnometer
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