The air, the temperature of which is + 24 ° C and the relative humidity of 52%, rose to a height of 2 km. Does this air form clouds?

1) 2 km × 6оС / km = 12оС – temperature difference
2) + 24оС – 12оС = + 12оС – air temperature at an altitude of 2 km
3) According to the table, we determine that at a temperature of + 24 ° C Q = 22.2 g / m3, at a temperature of + 12 ° C Q = 10.6 g / m3.
4) q = Q × r: 100% = 22.2 g / m3 × 52%: 100% = 11.5 g / m3 – absolute air humidity
5) 11.5 g / m3 – 10.6 g / m3 = 0.9 g / m3 – each m3 of air can condense so much moisture.
Answer: this air forms clouds, because it contains 11.5 g / m3 of moisture, and it can contain only 10.6 g / m3 at a given temperature.