Question: 5. A core sample has a dry weight in air of 21.5 g. A beaker half-filled with mercury is placed in a balance and then

5. A core sample has a dry weight in air of 21.5 g. A beaker half-filled with mercury is placed in a balance and then the balance is zeroed. Then, the dry sample is placed inside the beaker. The balance reads 113 g. If the crushed volume of the sample grains is 5.64 cc, what is the porosity? (Density of mercury = 13.555 g/cc)

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