Regarding the questions below, assume that a mass of air at 20C contains 7.6 g/kg of moisture. 

53. What is its maximum specific humidity? 54. What is its present specific humidity? 55. What is its relative humidity? 56. If the temperature of this mass of air drops, will its relative humidity rise or fall? Why? 57. At what temperature will this mass of air reach saturation? 58. What will its relative humidity be when the dew point temperature is reached? Now, assume a different mass of air with a relative humidity of 40% at a temperature of 25?C. 59. What is the actual humidity content expressed g/kg? (Thus, by knowing relative humidity and air temperature, relative humidity provides us with an indirect method of determining the actual water vapor content of the air. 60. How is it possible that an air mass over the hot, arid Sahara (30? N) has a higher specific humidity than a cool, moist mass of air on the coast of Alaska?

Maximum Specific Humidity Temperature C G/kg -40 0.1 -30 0.3 -20 0.8 -10 1.8 0 3.8 5 5.4 10 7.6 15 10.6 20 14.7 25 20 30 27.1 35 36.4 40 48.7