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Given that the weight of dry sample in air is 30.0 g, weight of dry sample coated with paraffin is 31 g (density of paraffin = 0.9 g/cc), and weight of coated sample immersed in water at 40°F is 12.0 g (density of water = 1.00 g/cc). What is the sample bulk volume? Given that the weight of saturated sample with water in air is 33 g, find the sample porosity. What is the formation type?