Question

Please provide the full derivation of these equations. They are based on Archimedes’ principle to find...

Please provide the full derivation of these equations. They are based on Archimedes’ principle to find porosity in solid sample. Thanks

Va (apparent volume )= (Mair - MH20)/ (pH20- pair) equation 1

Total Porosity [%] = {[(Msolvent- Mair) / (psolvent)] / Va } x 100 equation 2

Where:

Va= apparent volume

Mair= mass of air

MH20= mass of water

Msolvent= mass of solvent

pH20= density of water

pair= density of air

psolvent= density of solvent

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