Question 11 : What is the partial pressure of 20% gas in a system with vapor pressure 10 mm Hg?
1. 2 mm Hg
2. 10 mm Hg
3. 50 mm Hg
4. 100 mm Hg
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Question 12 : What is the fraction of gas in a system with partial pressure 2 mm Hg and vapor pressure 5 mm Hg?
1. 0.4
2. 0.5
3. 0.6
4. 0.8
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Question 13 : What is the vapor pressure of 50% gas in a system with partial pressure 2 mm Hg?
1. 1 mm Hg
2. 2 mm Hg
3. 4 mm Hg
4. 8 mm Hg
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Question 14 : What is the partial pressure of a 40% gas in a system with vapor pressure 1 mm Hg?
1. 0.2 mm Hg
2. 0.4 mm Hg
3. 0.6 mm Hg
4. 0.8 mm Hg
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Question 15 : What is the degree of freedom of a gaseous mixture composed of CH₄, CO₂, H₂CO₃, H₂O and H₂O₂?
1. 1
2. 2
3. 3
4. 4
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Question 16 : What is the degree of freedom of a mixture composed of liquid O₂, gaseous H₂ and ice?
1. 1
2. 2
3. 3
4. 4
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Question 17 : What is the degree of freedom of a mixture composed Liquid H₂O, solid Br₂ and gaseous CO₂, NO₂?
1. 1
2. 2
3. 3
4. 4
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Question 18 : What is the degree of freedom of a gas mixture composed of O₂, H₂O and H₂O₂?
1. 1
2. 2
3. 3
4. 4
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Question 19 : What is the degree of freedom of a gas mixture composed of CO₂, SO₂, SO₃, CH₄, H₂CO₃?
1. 2
2. 3
3. 5
4. 7
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Question 20 : What is the degrees of freedom of a system with a mixture of copper pyrites, liquid benzene and helium?
1. 1
2. 2
3. 3
4. 4
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