Question

Плотность водяного пара при 20 градусах равна 8 г/см3.Какова относительная влажность воздуха,если плотность насышенного пара при этой температуре 17.3г/см3?Выпадет ли роса при понижении температуры до 14 градусов по цельсию,если плотность насышенного пара при этой температуре 12,1г/см3?Пожайлуста есле можно с дано и решением.

Answer 1

Дано:
ро=8 г/см³
рон=17,3 г/см³
===
φ=?
===
φ=ро/рон=8/17,3=0,46   (46%)
Ответ 46%
========================
По таблице находим плотность насыщенного пара при температуре 14°С   рон=12,1 г/см³. При этой плотности и температуре влажность 100  %. Выпадет роса.
========================

Answer 2

Relative Humidity Calculation

To calculate the relative humidity, we can use the formula:

Relative Humidity = (Density of Water Vapor / Density of Saturated Water Vapor) * 100%

Let's calculate the relative humidity at 20 degrees Celsius using the given densities of water vapor.

Given: - Density of water vapor at 20 degrees Celsius = 8 g/cm³ - Density of saturated water vapor at 20 degrees Celsius = 17.3 g/cm³

Using the formula, we can calculate the relative humidity as follows:

Relative Humidity = (8 g/cm³ / 17.3 g/cm³) * 100%

Calculating this, we find that the relative humidity at 20 degrees Celsius is approximately 46.2%.

Dew Point and Dew Formation

The dew point is the temperature at which air becomes saturated with water vapor, leading to the formation of dew. When the temperature drops below the dew point, the air can no longer hold all the moisture, resulting in condensation and the formation of dew.

To determine if dew will form when the temperature drops to 14 degrees Celsius, we need to compare the density of saturated water vapor at that temperature with the given density.

Given: - Temperature = 14 degrees Celsius - Density of saturated water vapor at 14 degrees Celsius = 12.1 g/cm³

If the density of water vapor in the air is greater than the density of saturated water vapor at the given temperature, dew will form.

Comparing the given density of saturated water vapor at 14 degrees Celsius (12.1 g/cm³) with the given density, we find that the density of water vapor (8 g/cm³) is less than the density of saturated water vapor. Therefore, dew will not form when the temperature drops to 14 degrees Celsius.

Please note that the calculations provided are based on the given densities of water vapor and saturated water vapor.