(Solved):
- UNIVERSAL GAS LAW a) Determine the volume. \( \mathrm{L} \), occupied by \( 1 \mathrm{~mol} \) o ...
- UNIVERSAL GAS LAW a) Determine the volume. \( \mathrm{L} \), occupied by \( 1 \mathrm{~mol} \) of hydrogen sulfide gas, \( \mathrm{H}_{2} \mathrm{~S} \), at \( 20^{\circ} \mathrm{C} \) and 1 atmosphere pressure. Determine the density of hydrogen sulfide gas at \( 20^{\circ} \mathrm{C} \) and 1 atmosphere pressure, \( \mathrm{mg} / \mathrm{L} \). If the hydrogen sulfide concentration in a sewage pump station manhole is \( 85 \mathrm{ppmv} \), express this concentration as i) \( \mathrm{L} \) of \( \mathrm{H}_{2} \mathrm{~S} / \mathrm{L} \) air, ii) mol of \( \mathrm{H}_{2} \mathrm{~S} / \mathrm{mol} \) air, iii) \( \mathrm{g} \mathrm{of} \mathrm{H}_{2} \mathrm{~S} / \mathrm{m}^{3} \) air assuming the temperature is \( 20^{\circ} \mathrm{C} \) and atmospheric pressure.