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Sankar posted an Question
October 25, 2021 • 21:20 pm 30 points
  • IIT JAM
  • Geology (GG)

7. the grain density (of solids only) and bulk density (solids +voids) of a sandstone sample are2.7 1 point gm/cm3and 2.3 gm/cm3, respectively. the total porosi

7. The grain density (of solids only) and bulk density (solids +Voids) of a sandstone sample are2.7 1 point gm/cm3and 2.3 gm/cm3, respectively. The total porosity (in %, correct to two decimal places) of the sample is

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    Saurabh 1

    Porosity for the given bulk density and grain (particle) density , is given by p= (Grain density –Bulk density) /(Bulk density) now putting values as per given in the question, we get porosity as p= (2.7 –2.3) /(2.3) p= 0.4/2.3 = 0.1739 So porosity (in %) is equal to = 17.39 (correct upto 2 decimal places) Answer--> Porosity(in %) = 17.39

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    Sushmita

    Answer: 14.81%, please check following attachment for answer.

    cropped475857244851087965.jpg
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