| 21. | A container has two gases at 27°C, one with molar volume 6 L/mole, another with molar volume 3 L/mole, what is the total pressure of the container? |
| a. | 6.9 atm |
| b. | 8.5 atm |
| c. | 12.3 atm |
| d. | 15.8 atm |
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Answer: (c).12.3 atm
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| 22. | The fraction of gas in a container is 0.1, if the total pressure of the container is 10 atm, what is the partial pressure of the gas? |
| a. | 1 atm |
| b. | 5 atm |
| c. | 10 atm |
| d. | 20 atm |
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Answer: (a).1 atm
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| 23. | The fraction of gas in a container is 0.5, if the total volume of the container is 6 liter, what is the volume of the gas? |
| a. | 2 liter |
| b. | 3 liter |
| c. | 5 liter |
| d. | 6 liter |
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Answer: (d).6 liter
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| 24. | A gas mixture contains 30% CO₂, 40% O₂, 30% N₂, if the partial pressure of CO₂ is 6 Pa, what is the total pressure of gas mixture? |
| a. | 6 Pa |
| b. | 10 Pa |
| c. | 20 Pa |
| d. | 60 Pa |
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Answer: (c).20 Pa
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| 25. | The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2^(n-1), the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture? |
| a. | 3 |
| b. | 5 |
| c. | 10 |
| d. | 15 |
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Answer: (b).5
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