Question

Рассчитайте плотность пропана С3Н3 по: а) воздуху; б) кислороду

Answer 1

Пропан - C3H8

а) плотность по воздуху

M(C3H8)=12×3+1×8=44 г/моль

M(воздуха)=29 г/моль

D=44/29=1.517

б) плотность по кислороду

M(O2)=16×2=32 г/моль

D=44/32=1.375

Answer 2

Calculation of Propane (C3H8) Density

To calculate the density of propane (C3H8) in different gases, we need to know the molar mass of propane and the molar masses of the gases in question. The molar mass of propane (C3H8) is approximately 44.1 g/mol.

# a) Density of Propane in Air

To calculate the density of propane in air, we need to compare the molar masses of propane and air. The molar mass of air is approximately 28.97 g/mol.

The density of a gas can be calculated using the formula:

Density = (Molar Mass of Gas) / (Molar Mass of Air) * Density of Air

Substituting the values:

Density of Propane in Air = (44.1 g/mol) / (28.97 g/mol) * Density of Air

Unfortunately, the density of air is not provided in the search results. However, the density of air at standard conditions (0°C and 1 atm) is approximately 1.225 kg/m^3. Please note that this value may vary depending on temperature and pressure.

# b) Density of Propane in Oxygen

To calculate the density of propane in oxygen, we need to compare the molar masses of propane and oxygen. The molar mass of oxygen (O2) is approximately 32 g/mol.

Using the same formula as above:

Density of Propane in Oxygen = (44.1 g/mol) / (32 g/mol) * Density of Oxygen

Unfortunately, the density of oxygen is not provided in the search results. However, the density of oxygen at standard conditions (0°C and 1 atm) is approximately 1.429 kg/m^3. Please note that this value may vary depending on temperature and pressure.

Please note that the values provided for the density of air and oxygen are approximate and may vary depending on the specific conditions. It is always recommended to consult reliable sources or perform precise calculations for accurate results.