. A sample of N2O effuses from a container in 42.0 seconds. How long will it take the same amount of gaseous I2 to effuse from the same container under identicalconditions?

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6. On a certain day a laboratory barometer indicates that the atmospheric pressure is 786.2 torr. A sample of gas is placed in a flask attached to an open-end mercury manometer, and a meter stick is used to measure the height of the mercury in the two arms of the U tube. The height of the mercury in the open-end arm is 80.4 mm, and the height in the arm in contact with the gas in the flask is 123.5 mm. What is the pressure of the gas in the flask (a) in atmospheres, (b) in kilopascals?

At what pressure does the mean free path of Argon at 298 K become comparable to the size of a 1.000 L (spherical) vessel that contains the gas? Take the diameter of argon to be about 0.339 nm.

A sample of an ideal gas at 1.00 bar and a volume of 1.91 L1.91 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 60.0 bar,60.0 bar, what was the volume of the sample? Assume that the temperature was held constant.

A particular balloon can be stretched to a maximum surface area of 1257 cm². The balloon is filled with 3.2 L of helium gas at a pressure of 759 torr and a temperature of 310 K. The balloon is then allowed to rise in the atmosphere. Assume an atmospheric temperature of 273 K and determine at what pressure the balloon will burst. (Assume the balloon to be in the shape of a sphere.) Express your answer using two significant figures. 15] ΑΣΦ P = 0.22 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining atm

When limestone (solid CaCO3) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas. This is an extremely useful industrial process of great antiquity, because powdered lime mixed with water is the basis for mortar and concrete - the lime absorbs CO₂ from the air and turns back into hard, durable limestone. Suppose a limekiln of volume 800. L is pressurized with carbon dioxide gas to 14.9 atm, and heated to 960.0 °C. When the amount of CO, has stopped changing, it is found that 3.96 kg of CaCO, have appeared. Calculate the pressure equilibrium constant K, this experiment suggests for the equilibrium between CaCO3 and CaO at 960.0 °C. Round your answer to 2 significant digits. Note for advanced students: it's possible there was some error in this experiment, and the value it suggests for K, does not match the accepted value. K = 3.07 P

The label on a tank of gas of unknown origin had been lost. To determine its identity (molecular weight) a certain volume of it took 7.155 seconds to effuse through a porous partition. Under identical conditions, CCl 4 effused through the hole in 62.50 seconds. What is the molar mass of the unknown gas? Remember that effusion rate and time are inversely proportional to each other.