Gases

1 atm is equal to:

• 760 mm Hg.

• 760 torr.

• 101,325 Pa.

• all of the above

Boyle's Law is expressed as:

• V is proportional to 1/P

• P is proportional to V

• V is proportional to 1/T

• V is proportional to T

To solve problems using Boyle's Law, which mathematical equation should be used?

• P1/V1 = P2/V2

• P1 V1 = P2 V2

• V1/P1 = V2/P2

• P2V1 = P1V2

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

Charles's Law is expressed as:

• V is proportional to 1/P

• P is proportional to V

• V is proportional to 1/T

• V is proportional to T

When must temperature values in gas law calculations be expressed in kelvin units?

• only for Charles's law

• only for the Ideal Gas law

• only for the Combined Gas law

• never

• always

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? (R= 0.0821 L atm/ mol K)

• 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

Suppose you had a balloon containing 1 mole of helium at STP and a balloon containing 1 mole of oxygen at STP. Which statement is TRUE?

• The balloons will have the same volume.

• The balloons will have the same mass.

• Both A and B are true.

• not enough information