Find the the rms speed for nitrogen molecules at 295 K. 500 m/s 235 m/s 513 m/s 425 m/s
How many moles are there in 10.0 g of CO2 gas (M = 44.0 g/mol)? 0.555 mol 0.227 mol 0.125 mol 0.335 mol
A company advertises that it delivers helium at a gauge pressure of 1.72×10 Pa in a cylinder of volume 43.8 L. How many balloons can be inflated to a volume of 4.00 L with that amount of helium? Assume the pressure inside the balloons is 1.01×10 Pa and the temperature in the cylinder and the balloons is 25.0∘C. 2.55×10^3 3.25×10^3 1.87×10^3 3.25×10^3
How many moles are there in 0.0500 g of N gas (M = 28.0 g/mol)? 2.00×10^−3 mol 2.50×10^−3 mol 1.79×10^−3 mol 1.05×10^−3 mol
The escape velocity from the Moon is much smaller than that from the Earth, only 2.38 km/s. At what temperature would hydrogen molecules (molar mass is equal to 2.016 g/mol ) have a root-meansquare velocity vrms equal to the Moon's escape velocity? 550 K 458 K 265 K 350 K
Given that air is 21% oxygen, find the minimum atmospheric pressure that gives a relatively safe partial pressure of oxygen of 0.16 atm. 0.98 atm 0.76 atm 0.55 atm 0.67 atm
A person hits a tennis ball with a mass of 0.058 kg against a wall. The average component of the ball's velocity perpendicular to the wall is 11 m/s, and the ball hits the wall every 2.1 s on average, rebounding with the opposite perpendicular velocity component. If the part of the wall the person hits has an area of 3.0 m what is the average pressure on that area? 0.30 Pa 0.10 Pa 0.20 Pa 0.40 Pa
A sealed, rigid container of 0.560 mol of an unknown ideal gas at a temperature of 30.0∘C is cooled to −40.0∘C. In the process, 980 J of heat are removed from the gas. Is the gas monatomic, diatomic, or polyatomic? polyatomic diatomic monoatomic Difficult to determine