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3). Powder Bulk Density and Porosity a. Calculate the bulk density of the powder, DB, the porosity (pore volume per unit mass), P, and the
3). Powder Bulk Density and Porosity a. Calculate the bulk density of the powder, DB, the porosity (pore volume per unit mass), P, and the % voidage for a powder sample under the following three packing conditions. The powder has a true density of 1.15g/cm3. 1. Condition 1 (loose packing): a 35 gram sample of the powder is poured into a 100ml graduated cylinder (to fill the cylinder). 2. Condition 2 (moderate packing): a 35 gram sample of the powder is poured into a 100ml graduated cylinder (to fill the cylinder). The cylinder containing the loosely packed powder is tapped on the surface of the lab bench 3 times. The fill volume of the cylinder recorded is 45ml i.e. the packed powder goes up to the 45ml line of the graduated cylinder. 3. Condition 3 (close packing): the cylinder containing the moderately packed powder from condition 2 is tapped on the surface of the lab bench an additional 47 times. The fill volume of the cylinder recorded is 38ml. b. Describe a method one could use to confirm the \% void space calculated in part a. Does this method allow one to distinguish internal particle porosity from the yoidage between particles? Explain
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