5. [10 pts] both the water within pore spaces and the mineral skeleton of an aquifer exhibit clasticity, expanding and contracting with pressure differences. under a unit hydraulic head change, the amount of water per unit volume of a saturated formation that is stored or expelled from storage due to these compressiblity properties is the s entre stora , s-prg(α+np, where α and β are the compressibility of the aquifer skeleton and water, respectively. a confined aquifer has a specific storage of 24 x 105 /m. the porosity is 0.36, and the water compressibility is 4.5x 1010 /pa. assume water at 20 c and standard sea-level pressure (appendix 14). (a) what is the compressibility of the aquifer skeleton [5 pts]p (b) for the aquifer skeleton compressibility you just calculated, what would the aquifer specific stornage be ifporosity were 60% [5 pts]? nd to define the hydraulic gradient using