A) An anakysis of river water yields C : N : P = 41.3 : 2.4 : 0.3. Compare this to the Redfield Ratio of C : N : P = 106 : 16 : 1.
B) What is the CEC (in meq/100 g) of a soil that contains 25.8 mcg/ml Ca2+, 3.4 mcg/ml Mg2+, and 2.2 mcg/ml K+?
Please show me how to do these step by step.
C) How does high TDS affext the activity of ions in solution and why? How can we estimate ion activities in such solutions?