If the air temperature is 20 degree Celsius, how much water it holds at 100% relative humidity? If the absolute humidity 10 gram per kg of air. What is the relative humidity. Show working out

Let's calculate the humidity values. 1. Water held at 100% relative humidity at 20°C At 20^, the maximum amount of water vapor that 1 kg of air can hold (saturation mixing ratio) is approximately 14.7 grams. This value is obtained from psychrometric charts or standard tables for saturated air. 14.7 grams of water per kg of air 2. Calculate relative humidity Relative humidity (RH) is the ratio of the absolute humidity (actual water vapor content) to the saturation humidity (maximum water vapor content at that temperature), expressed as a percentage. Step 1: Identify the given values. Absolute humidity = 10 g/kg of air Saturation humidity at 20^ = 14.7 g/kg of air (from part 1) Step 2: Apply the relative humidity formula. Relative Humidity = Absolute HumiditySaturation Humidity × 100\% Relative Humidity = 10 g/kg14.7 g/kg × 100\% Relative Humidity ≈ 0.68027 × 100\% Relative Humidity ≈ 68.0\% 3 done, 2 left today. You're making progress.