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6 Nov 2019

In what phase is CO2 at 4 atm and �10 �C?

liquid, gas or solid?


Starting from the point described above, what phase change wouldeventually result from an increase in pressure?

vaporization

sublimation

freezing

deposition

melting

condensation

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Hubert Koch
Hubert KochLv2
2 May 2019
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Related questions

1) In what phase is CO2 at 25 atm and -65 °C?
2) Starting from the point described above, what phase change would eventually result from a decrease in pressure?

1. Describe four types of intermolecular interactions; sketch attractions between molecules (somehow communicate what the attraction is). Which of these is the strongest? Which is the weakest? What can a substance’s phase at room temperature tell us about the intermolecular interactions?

2. What types of substances can hydrogen bond? What is special about the hydrogen bond?

3. Define each of the following: vaporization; condensation; sublimation; deposition; melting (fusion); freezing. Which of these are exothermic? Which are endothermic?

4. Define the “heat of fusion” (ΔHfus) and “heat of vaporization” (ΔHvap). Why do these processes require an input of energy? What is the energy used for?

Question

1. Describe four types of intermolecular interactions; sketch attractions between molecules (somehow communicate what the attraction is). Which of these is the strongest? Which is the weakest? What can a substance’s phase at room temperature tell us about the intermolecular interactions?

2. What types of substances can hydrogen bond? What is special about the hydrogen bond?

3. Define each of the following: vaporization; condensation; sublimation; deposition; melting (fusion); freezing. Which of these are exothermic? Which are endothermic?

4. Define the “heat of fusion” (ΔHfus) and “heat of vaporization” (ΔHvap). Why do these processes require an input of energy? What is the energy used for?

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