A sample of phosgene gas (COCl2) is kept at 850 torr and 35.0 °C. Determine its density.

A 25.0-L reaction vessel containing a mixture of CO₂ and excess F₂ is set up at 125 °C and 3.50 atm of pressure. According to the equation CO₂(g) + 4 F₂(g) → CF₄(g) + 2 OF₂(g), a spark ignites CO₂, resulting in its complete combustion. The temperature returns to 125 °C after the reaction, and the pressure of the mixture of product gases (CF₄, OF₂, and unreacted F₂) is found to be 2.85 atm. What are the partial pressures of the individual gases in the product mixture?

H₂SO₃ decomposes into liquid water and SO₂ gas. Calculate the volume of SO₂ gas that would be produced at 1 atm and 300 °F from 5.60 g of H₂SO₃

Identify which of the following statements are false. 

i) The molecules from food responsible for its smell travel to your nose by the process of diffusion. 

ii)  F₂ will effuse faster than Kr.

iii) The higher the molar mass, the higher the effusion rate. 

iv) Effusion and diffusion are different processes.

v) Heavier molecules take more time to effuse. 

Arrange in order of increasing rate of effusion: Cl₂, Ar, HI.

Identify the gas that would have a lower mean speed: Kr at 15.0°C or Cl₂ at 300 K.

At 298 K, calculate the root mean square velocity and kinetic energy of CO, CO₂, and SeO₃. Which gas has the greatest velocity? The greatest kinetic energy? The greatest effusion rate?