Gases HON

Which is true about the molecules at 0 K?

• They are moving really fast
• They are moving really slowly
• There is no motion at 0 K
• All of the above are true

A balloon filled with 0.500 L of air at 1 atm is submerged in the water to a depth that produces a pressure of 3.25 atm. What is the volume of the balloon at this depth?

• 1.63 L

• 0.154 L

• 6.50 L

• 0.615 L

A 5.00 liter balloon of gas at 25°C is cooled to 0°C. What is the new volume (liters) of the balloon?

• 0 liters

• 22.4 liters

• 5.46 liters

• 4.58 liters

Tags

NGSS.HS-PS3-4

What is the pressure of a 3.00 L gas vessel that has 18.0 grams of helium at 25 C?

• 147 atm

• 36.7 atm

• 32.6 atm

• 1.81 atm

Which set of conditions reflect STP?

• 298 K, 1 atm

• 373 K, 760 torr

• 273 K, 1 Pa

• 273 K, 760 mm Hg

A 2.00-liter sample of a gas has a mass of 1.80 grams at STP. What is the density, in grams per liter, of this gas at STP?

• 0.900

• 1.80

• 11.2

• 22.4

If 60. liters of hydrogen gas at 546 K is cooled to 273 K at constant pressure, the new volume of the gas will be

• 120 L

• 20 L

• 30 L

• 40 L

If you increase the pressure of a constant volume of gas, what will happen to the temperature?

• Increase
• Decrease
• Stay the same
• It will Blow Up

How are pressure and volume related?

• Directly
• Indirectly
• They aren't related

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change