Problem 1
Which of the two-cloud droplets or rain drops-would you expect to be more effective in scavenging gases from the atmosphere? Explain your reasoning.
Problem 2
A particular fog consists of 10000 droplets of water per \(\mathrm{cm}^{3}\). The average diameter of the drops is \(1.5 \mu \mathrm{m}\). Compare the mass of water in the liquid phase to that in the gaseous form if the temperature is \(35^{\circ} \mathrm{C}\) and the relative humidity is \(100 \%\).
Problem 3
Compare the amount of nitric oxide in air at a concentration of \(300 \mathrm{ppbv}\) with the amount of nitrate ion in a fog consisting of 10000 droplets \(\mathrm{cm}^{-3}\) having an average diameter of \(2 \mu \mathrm{m}\) and a concentration in the droplets of \(3 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-}\).
