Lab 5 assignment, question #3

Soil chemistry terminology - Since in soil chemistry we use water-based solutions (as extraction solutions such as ammonium acetate that was used in last week's lab and alos as standard solutions), one needs to assume that these water-based solutions (and extracts of elements obtained by using those extraction solutions) have the same density as water. Consequently, it is to be assumed that 1 mL of a soil extract is equal to 1 mg.

Thus in question 3 "extract 5 mL of soil with 25 mL of extraction solution" remember that we use water-based solutions for extracting our samples.