Question- 1 rainwater collected contains pb cu and zn at 85, Ask an Expert

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Question- 1. Rainwater collected contains Pb, Cu and Zn at 8.5, 5.0 and 7.5 micro ¬g/L. Determine these concentrations in units of mol/L (or nmol/L).

2. The concentration of ozone (O3) on a warm summer day (T = 33 °C, P = 1 atm) is 110 ppbv. What is the concentration in (a) mg/m3and (b) moles of O3per 106moles of air?

3. The mass of toluene (C7H8) in a 1 kg subsurface soil sample collected after an underground storage tank was removed was measured to be 5.5 mg. What is the concentration of toluene in the soil in (a) ppmmand (b) ppbm?

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Category:- Chemistry
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