Question

Из предложенного перечня выберите все газообразные вещества, плотность которых больше плотности углекислого газа (все вычисления сделаны при нормальных условиях). (Для вычисления плотности газообразных веществ можно молярную массу разделить на молярный объём.) •CH4 •HBr •CL2O •SO2 •CO •NO Срочнооооо

Answer 1

Ответ:

2,3,4

................................................

Answer 2

Gas Densities Calculation

To calculate the densities of the given gases, we can use the formula: Density = (Molar Mass) / (Molar Volume). The molar volume of an ideal gas at standard temperature and pressure (STP) is 22.4 liters/mol.

Calculating Densities

- CH4 (Methane): - Molar Mass of CH4 = 16.04 g/mol - Density of CH4 = 16.04 g/mol / 22.4 L/mol = 0.715 g/L.

- HBr (Hydrogen Bromide): - Molar Mass of HBr = 80.91 g/mol - Density of HBr = 80.91 g/mol / 22.4 L/mol = 3.61 g/L.

- Cl2O (Dichlorine Monoxide): - Molar Mass of Cl2O = 86.90 g/mol - Density of Cl2O = 86.90 g/mol / 22.4 L/mol = 3.88 g/L.

- SO2 (Sulfur Dioxide): - Molar Mass of SO2 = 64.07 g/mol - Density of SO2 = 64.07 g/mol / 22.4 L/mol = 2.86 g/L.

- CO (Carbon Monoxide): - Molar Mass of CO = 28.01 g/mol - Density of CO = 28.01 g/mol / 22.4 L/mol = 1.25 g/L.

- NO (Nitric Oxide): - Molar Mass of NO = 30.01 g/mol - Density of NO = 30.01 g/mol / 22.4 L/mol = 1.34 g/L.

Conclusion

Based on the calculations, the gases with densities greater than that of carbon dioxide (CO2) at standard conditions (1.98 g/L) are: - Hydrogen Bromide (HBr) - Dichlorine Monoxide (Cl2O)

These are the gases from the given list with densities greater than that of carbon dioxide at standard conditions.

Let me know if there's anything else you'd like to know!