Hobbies And Interests
Things You'll Need
Instructions
Set up the cylindrical column, securing it to the stand with a clamp.
Add the sediment sample to the column, making sure the stopcock is closed before doing so.
Determine \"Vt.\" This is the total volume of the cylindrical column. You can determine this volume by multiplying the height of the sediment by the cross-sectional area of the cylindrical column. (Recall that the equation to determine the area of a circle is A=?r^2.)
Fill the beaker or graduated cylinder with water. Weigh the water-filled container on the scale. Mark down this mass in your notebook.
Slowly add water into the column containing the sediment sample. Continue to pour water into the column until the sediment is filled with water.
Use the scale to weigh the water container again with the remaining amount of water. Record this mass in your notebook.
Determine \"Vv.\" This is the volume of water added to the sediment. To calculate this value, subtract the final mass of the water container from the beginning mass. You can convert this value from grams to cubic centimeters by remembering that one gram is equivalent to one cubic centimeter.
Divide the value you calculated for \"Vv\" by the value you calculated for \"Vt.\" Multiple this resulting number by 100. Doing so expresses the porosity value as a percentage.