To determine the molar mass of an unknown gas, its effusion time was compared to Oscon gas, which has a molar mass of 42.005g - mol1. A sample of Oscon was found to effuse from a container in 41.71 Part A seconds. The same amount of the unknown gas requires 91.76 seconds. Rateoscon Rateunknown Determine the ratio Hint the times are not the individual rates themselves. Rates are an amount per time. Express your answer using four significant figures. ? RateOncon Ratenknown

Gases are different from solids and liquids. In a sample of gas, the molecules are far apart. The gas molecules also move around and collide with each other as well as with the walls of the container. These collisions generate pressure. The pressure of a gas can be measured in different units. One convenient unit of measure is called the atmosphere (atm) because it is based on atmospheric pressure. At sea level, the average pressure is 1 atm. As you get higher in altitude, the pressure steadily drops until you leave the atmosphere, where the pressure is very close to 0 atm. The table below shows the different commonly used units of measuring gas pressure. Use this table in the pressure unit conversions. Unit Abbreviation 1 atm equivalent FT atmosphere atm 1.00 atm (exact) millimeters of mercury mmHg 760 mmHg torr 760 torr inches of mercury in. Hg 29.9 in. Hg pounds per square lb/in.² 14.7 lb/in.² inch (psi) pascal torr Pa 101,325 Pa Part A Convert 1.20 atm of pressure to its equivalent…

Effusion is the process where a gas flows through a small hole in a container.  Graham’s Law of Effusion says that the rate of effusion of a gas from a particular hole is inversely proportional to the square root of the MW of the gas (at constant temperature and pressure).  Describe why normal balloons filled with He tend to go flat faster than the same balloons filled with air.

The rate of effusion of NO2 gas through a porous barrier is observed to be 3.05 x 10-4 mol/h. Under the same conditions, the rate of effusion of CO₂ gas would be mol/h.