Consider a shale-free, dry, sandstone core plug. by measurement, the following data are known: d=2.54 cm, l=5.00 cm, and mass (dry) =52.80 g.
f. for an exponent n of 1.9, 1). what would be the end-to-end resistance of the core and its true resistivity? 2). estimating the porosity and permeability of this sand?
g. if the sandstone contains clay, the mass of the saturated plug with the same nacl brine is 57.06, vsh=20%, and rsh=0.8 ω∙m. 1). calculate the water saturation assuming clean sand. 2). calculate the water saturation using fertl and hammack’s equation.

Calculate the number of molecules present in 0.750 mol of mgo.

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?