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1. Given e_{sw} = 57mb and r = 0.5, find T_{LCL}.
2. An air mass has a temperature of 68ºF at 970hPa with a mixing ratio of 5 g kg^{-1}.
Without any condensation or mixing the air mass now has a temperature of 50ºF and a pressure of 750hPa. Find the initial and final values of (a) r, (b) Tdew and (c) vapour pressure.
3. Place the following temperatures in order from least to greatest:
T, T_{virt}, T_{dew}, T_{w}, T_{ei}, T_{LCL}
4. Using the same temperatures as problem 3, explain using thermodynamically sound principles what each temperature represents.