City water management is analyzing water samples from the local river for water pollutants that could be toxic to humans if foun
d in drinking water. Their collection data is below. Samples Location Nitrates Carbamates 1 Two miles downriver from drinking water uptake facility 12 mg/L 0.06 mg/L 2 One mile downriver from drinking water uptake facility 9 mg/L 2 mg/L 3 One mile upriver from drinking water uptake facility 8 mg/L 0.04 mg/L 4 Two miles upriver from drinking water uptake facility 10 mg/L 0.05 mg/L Toxic levels: Nitrates ≥ 10 mg/L; Carbamates ≥ 0.04 mg/L. *≥ denotes greater than or equal to. Which sample location(s) could possibly lead to contamination of drinking water? Samples 1, 2, 4
The assumption in this problem is that the gas, CO2, is ideal and that the ideal gas law is applicable such that, n = PV/RT We simply substitute the given values to the equation above, n = (1 atm)(V) / (0.082 Latm/mol.K)(T) n = 12.20 V/T
