Problem- Water from a lake in an area with limestone bedrock has a chemical composition as follows- Calcium 95 mg L-1, Magnesium 12mg L-1, Sodium 17mg L-1, Potassium 4 mg L-1, Hydrogen carbonate (asHCO3-) 338 mg L-1, Sulphate (as SO4-2)7 mg L-1,Chloride 12mg L-1, Fluoride 0.2 mg L-1, Nitrate (as NO-3) 3mg L-1. pH is 6.8. If the organic matter (HM) content of the water is 12 mg L-1, Illustrate that charge balance is adequately maintained.
Provide your answer in scientific notation