The following raw water analysis was obtained from a consulting engineering report constituent silica (as sio2) iron (fe) calcium magnesium sodium potassium bicarbonate sulfate chloride fluoride nitrate phosphate concentration (m 18 0.3 42 19 29 0.7 53.3 (reported as mg/l as caco3) 114 13 5.0 0.3 30 7.2 specific conductance (umhos/cm at 25o c) 413 total hardness as caco3 noncarbonate hardness as caco3 total dissolved solids turbidity 183 130 303 not reported a. for the above analysis, indicate the probable source of water (i. e., rainwater, surface water, groundwater, estuarine water, seawater)? provide reasons. b. is the water analysis complete? c. what is the concentration of sulfate in terms of mg/l as caco3? d. the report shows a total hardness of 183 mg/l as caco3, is this correct? show calculations. e. what is the ionic strength of the water? f. what is the activity coefficient for sodium (na) and sulfate (so4 for the water above a gasoline station was found to leaking gasoline. the soil was tested and found to contain the following assume water temperature at 25°c- use guntelberg approximation equation. aromatic compounds. benzene toluene xylene ethylbenzene 55 mg/kg of soil 30 mg/kg of soil 34 mg/kg of soil 12 mg/kg of soil what is the total carbon per kg of soil of the gasoline compounds?