A soil sample when fully dry has a mass of 261 g. The solid particles are assumed to have a specific

A soil sample when fully dry has a mass of 261 g. The solid particles are assumed to have a specific gravity of 2.65. When compacted to its greatest density, it has a dry unit weight of 132.7 lb/ft3. What is the porosity at that density? What is the saturated unit weight at that density? If a sample compacted to its maximum density has a unit weight of 137.4 lb/ft3, what is the degree of saturation?