If it takes 12.0 minutes for a sample of helium to completely diffuse through a room, how long will it take for a sample of nitrogen gas to diffuse at the same temperature?
If it takes 12.0 minutes for a sample of helium to completely diffuse through a room,...
Suppose it takes 6.34 minutes for 1.00 mol of H2 to diffuse through a porous membrane under specific conditions of temperature and pressure. Calculate how long (in minutes) it will take 1.00 mol of O2 to diffuse through the same membrane under the same conditions.
2. Consider a sample of helium gas at room temperature. (a) What is the average kinetic energy of an atom of helium in the gas sample? (b) What is the rms speed for the atoms? 3. A beaker with negligible mass contains 0.50 kg of water at a temperature of 800 C. How many grams of ice at a temperature of -20° C must be dropped in the waters temperature of the system is 30° C? (Cice 2010J/(kg C), Cwater...
A molecule takes 3.0 seconds to diffuse across a membrane. If the thickness of the membrane is doubled, then how long does it take the molecule to diffuse across the thicker membrane?
A sample of Br2(g) takes 36.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
A 3.0 L sample of helium gas was placed in a container filled with a porous membrane. Half of the helium gas effused through the membrane in 12.4 hours. A 3.0 L sample of fluorine gas was placed in an identical container. How many hours will it take for half of the fluorine gas to effuse through the membrane? (Please show work written down)
A cylinder full of helium gas is placed in a storage room at a temperature of IS °C. The volun cylinder is 20.0 L and the gas initially has a pressure of 100.0 atm. A. How many moles of helium gas are initially in the cylinder? B. What is the mass of the helium in the cylinder? C. A small fire breaks out in the storage room, raising the the to 450 °C. If the so that no gas escapes,...
Question 10 10 pts If hydrogen gas (H2) requires 28.51 minutes to effuse through a small hole in its container, how long will it take ammonia (NH3) to effuse under the same conditions of temperature and pressure? Atomic weights of the elements encountered in this problem are as follows: H: 1.00794 g/mol N 14.00674 g/mol 9.809 minutes 82.87 minutes 240.9 minutes 3.375 minutes 45.71 minutes
a sample of CO2 gas is observed to effuse through a pourous barrier in 4.05 minutes. Under the same conditions, the same number of moles if an unknown gas requires 4.28 minutes to effuse through the same barrier. The molar mass of the unkown gas is what?
A sample of neon gas diffuses through a porous barrier at a rate of 48.7 grams per hour (g/hr). At what rate (in the same units) does argon gas diffuse through the same barrier if the temperature is the same? Enter your answer in decimal form with the correct number of sig figs.
A sample of CH4 gas is observed to effuse through a porous barrier in 6.35 minutes. Under the same conditions, the same number of moles of an unknown gas requires 14.8 minutes to effuse through the same barrier. The molar mass of the unknown gas is ___g/mol.