Question

Обчислити кількість речовини 67,2 л азоту (N2) і відносну густину за повітрям срочно нужно

Answer 1

Ответ:

с тибя 5 звьозд

Объяснение:

………………………

Answer 2

Calculating the Amount of Substance and Relative Density of Nitrogen

To calculate the amount of substance and relative density of nitrogen, we can use the following information:

- The molar volume of any ideal gas at standard temperature and pressure (STP) is 22.4 liters. - The molar mass of nitrogen (N2) is approximately 28.02 grams per mole.

Calculating the Amount of Substance (in moles)

To calculate the amount of substance of 67.2 liters of nitrogen gas, we can use the formula:

Amount of substance (in moles) = Volume / Molar volume

Substituting the given values: Amount of substance (in moles) = 67.2 L / 22.4 L/mol

Amount of substance (in moles) ≈ 3 moles

So, the amount of substance of 67.2 liters of nitrogen gas is approximately 3 moles.

Calculating the Relative Density of Nitrogen

The relative density of a gas is the ratio of its density to the density of a standard reference gas, which is often dry air at the same temperature and pressure.

The relative density of nitrogen gas can be calculated using the formula:

Relative density = (Molar mass of gas / Molar mass of air) * (Volume of gas / Volume of air)

Substituting the given values: Relative density = (28.02 g/mol / 28.97 g/mol) * (67.2 L / 22.4 L)

Relative density ≈ 0.966

So, the relative density of nitrogen gas compared to air is approximately 0.966.

I hope this helps! If you have any further questions, feel free to ask.