Gas Laws Unit

Which of the following temperatures is appropriate to convert 25^oC into the Kelvin scale?

• 373K

• 272K

• 372K

• 298K

What would you expect to see if temperature increased if you were using Charles's Law?

• volume would decrease proportionally
• volume would increase proportionally
• pressure would increase proportionally
• pressure would decrease proportionally

Tags

NGSS.HS-PS1-5

Gay-Lussac's law shows the directly proportional relationship between which two variables?

• pressure-temperature
• volume-temperature
• volume-pressure
• temperature-number of moles

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

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

Tags

NGSS.HS-PS1-5

The following graph shows ____ relationship. 

• Direct
• Inverse

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm (make sure you use the correct R value).

• 7.18 L 
• 7.81 L
• 4.63 L
• 4.36 L

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC.  What is the new volume of the gas?

• 60.0 mL
• 15.0 mL
• 27.5 mL
• 32.5 mL

Tags

NGSS.HS-PS1-5

At 250 k and 1.75 atm, a gas has a mass of 15.3 g and occupies 5.60 L. What is the molar mass of the gas?

• 32.0 g/mol

• 42.2 g/mol

• 48.9 g/mol

• 54.3 g/mol

Find the density of Neon gas at .725 atm and 25°C 
D=MP/RT

• .35
• .47
• .60
• .79

A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?

• 13 L

• 0.72 L

• 7.2 L

• 3.44 L