Question

рассчитайте относительную влажность воздуха для бреста и могилева,если температура воздуха летним днем равна 20 градусов по цельсию, а фактическ содержание влаги в 1м кубическом воздуха в бресте состовляет 15г, в могилеве - 10г.

Answer 1

1)При t=20C в 1м куб. вмещает 17 г водыБрест - 15/17=0.88=88%Могилев - 10/17 = 0.59=59%2)17*200=3400г воды

Answer 2

Calculation of Relative Humidity in Brest and Mogilev

To calculate the relative humidity in Brest and Mogilev, we need to use the formula for relative humidity:

Relative Humidity = (Actual Water Vapor Content / Saturation Water Vapor Content) * 100%

Given the following information: - Temperature of the air in Brest and Mogilev: 20 degrees Celsius - Actual water vapor content in 1 cubic meter of air in Brest: 15 grams - Actual water vapor content in 1 cubic meter of air in Mogilev: 10 grams

We can calculate the saturation water vapor content using the Clausius-Clapeyron equation, which relates the saturation vapor pressure to temperature:

Saturation Water Vapor Content = (Saturation Vapor Pressure / Gas Constant) * Volume

Since the volume is constant (1 cubic meter), we can ignore it in our calculations.

Now, let's calculate the relative humidity for Brest and Mogilev.

Calculation for Brest:

1. Calculate the saturation vapor pressure at 20 degrees Celsius using the Clausius-Clapeyron equation: - Saturation Vapor Pressure = 6.11 * 10^((7.5 * 20) / (237.3 + 20)) = 17.54 millibars.

2. Convert the saturation vapor pressure to grams of water vapor using the ideal gas law: - Saturation Water Vapor Content = (17.54 * 0.01801528) / 0.0821 = 3.03 grams.

3. Calculate the relative humidity using the formula: - Relative Humidity = (15 / 3.03) * 100% = 494.06% (rounded to two decimal places).

Calculation for Mogilev:

1. Calculate the saturation vapor pressure at 20 degrees Celsius using the Clausius-Clapeyron equation: - Saturation Vapor Pressure = 6.11 * 10^((7.5 * 20) / (237.3 + 20)) = 17.54 millibars.

2. Convert the saturation vapor pressure to grams of water vapor using the ideal gas law: - Saturation Water Vapor Content = (17.54 * 0.01801528) / 0.0821 = 3.03 grams.

3. Calculate the relative humidity using the formula: - Relative Humidity = (10 / 3.03) * 100% = 329.70% (rounded to two decimal places).

Summary:

The relative humidity in Brest is approximately 494.06% and in Mogilev is approximately 329.70% when the temperature is 20 degrees Celsius and the actual water vapor content is 15 grams in Brest and 10 grams in Mogilev.

Please note that relative humidity values above 100% indicate supersaturation, which means that the air is holding more water vapor than it can normally hold at that temperature.