Unit 9 L2&3 HW

On the picture, please indicate the relationship between volume and temperature of a gas from 0K to 300K.

How many grams of O₂ can be contained in 32.1L of space at 30°C and 1 atm?

• 1.29g

• 41.18g

• 20.64g

• 72.4g

In the following reaction, H₂O₂ -> H₂ + O₂ 20g of H₂O₂ decomposes. How much pressure will your 1L balloon containing only oxygen at 25°C have when the reaction is complete?

• 10.5 atm

• 1.21 atm

• 0.588 atm

• 14.38 atm

In the lab, you make a mistake with your reaction and your beaker produces a foul-smelling odor. How would you describe the movement of the gas particles? (circle your choice)

• Escaping gas

• diffusion

• effusion

• slow moving

What is point A?

• triple point
• critical point
• equilibrium point
• normal melting point

Tags

NGSS.HS-PS3-2

What does point B represent?

• Triple point

• Critical point

• Equilibrium point

• Normal melting point

What phase change occurs from F to E?

• Sublimation

• Deposition

• Melting

• Condensation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change occurs from C to D?

• Condensation

• Vaporization

• Melting

• Sublimation

Tags

NGSS.MS-PS1-4

What phase change occurs from E to C?

• Sublimation

• Freezing

• Melting

• Vaporization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does the triple point on this graph mean?

• All three phases exist at once

• The substance has changed phase three different times

• The temperature is 3x the boiling point

• The temperature is 3x the freezing point