The cations on an exchangeable sites of a 30 g soil were displaced by repeatedly washing by a salt and found to be 20 mg ca+2, 1.0 mg na+1, 39 mg k+1, 12 mg mg+2, and 18 mg al+3. the ph of the soil was 5.0. calculate the cec (cmolc/kg), percentage base saturation (pbs) and percent acidic saturation (pac) per kg of the soil.

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

  the mississippians were considered to be  horticulturalists, which means they were

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car