Question

Определите среднюю молярную массу воздуха на Венере, приняв, что воздух состоит из 96,5%об.CO2CO2 и 3,5%об. N2N2 (содержанием других газов можно пренебречь, т.к. их концентрация крайне мала). Вычислите, во сколько раз венерский воздух тяжелее земного. В ответе укажите число с точностью до десятых. Помогите, пожалуйста

Answer 1

2Сa + O₂ = 2CaO
CaO + H₂O = Ca(OH)₂
Ca(OH)₂ + H₂SO₄ = CaSO₄ + 2H₂O

Answer 2

Calculating the Average Molar Mass of the Atmosphere on Venus

To calculate the average molar mass of the atmosphere on Venus, we can use the molar masses of carbon dioxide (CO2) and nitrogen (N2) and the given percentages of these gases in the atmosphere.

The molar mass of CO2 is approximately 44.01 g/mol, and the molar mass of N2 is approximately 28.02 g/mol.

The average molar mass of the atmosphere on Venus can be calculated using the following formula:

Average Molar Mass = (Molar Mass of CO2 * Percentage of CO2) + (Molar Mass of N2 * Percentage of N2)

Let's calculate the average molar mass using the given percentages of CO2 and N2 in the atmosphere on Venus.

Calculation

Given: - Percentage of CO2 = 96.5% - Percentage of N2 = 3.5%

Using the molar masses mentioned earlier: - Molar Mass of CO2 = 44.01 g/mol - Molar Mass of N2 = 28.02 g/mol

Average Molar Mass = (44.01 * 0.965) + (28.02 * 0.035)

Average Molar Mass ≈ 44.01 * 0.965 + 28.02 * 0.035

Average Molar Mass ≈ 42.42 + 0.98

Average Molar Mass ≈ 43.4 g/mol

Comparing the Density of Venusian Air to Earth's Air

To compare the density of Venusian air to Earth's air, we can use the ratio of their molar masses.

The ratio of the average molar mass of the atmosphere on Venus to that of Earth can be calculated as:

Ratio = Average Molar Mass of Venusian Air / Average Molar Mass of Earth's Air

The molar mass of Earth's air is approximately 28.97 g/mol.

Calculation

Using the calculated average molar mass of the atmosphere on Venus (43.4 g/mol) and the molar mass of Earth's air (28.97 g/mol):

Ratio = 43.4 / 28.97

Ratio ≈ 1.5

Conclusion

The Venusian air is approximately 1.5 times heavier than Earth's air.