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ACT Exam  >  ACT Questions  >  Which of The following is a critical temperat... Start Learning for Free
Which of The following is a critical temperature for Carbon dioxide?
  • a)
    32-degree centigrade
  • b)
    30.98-degree centigrade
  • c)
    40-degree centigrade
  • d)
    30.91 degree Kelvin
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Which of The following is a critical temperature for Carbon dioxide?a)...
The critical temperature of carbon dioxide is a maximum temperature where the carbon dioxide can remain as a liquid below this temperature. The carbon dioxide is gas so the critical temperature for Carbon dioxide is 30.98 degrees centigrade.
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Which of The following is a critical temperature for Carbon dioxide?a)...


30.98-degree centigrade

Carbon dioxide has a critical temperature, which is the temperature above which the gas cannot be liquefied by pressure alone. In the case of Carbon dioxide, the critical temperature is 30.98-degree centigrade.

Explanation:
- Critical temperature: The critical temperature of a substance is the temperature at which the substance can exist in equilibrium as a liquid and a gas phase.
- Carbon dioxide: Carbon dioxide is a chemical compound composed of one carbon atom and two oxygen atoms. It is commonly found in the atmosphere and is known for its role in the greenhouse effect.
- 30.98-degree centigrade: This is the critical temperature of Carbon dioxide, which means that at temperatures above this value, Carbon dioxide cannot exist in a liquid state, regardless of the pressure applied.
- Significance: Understanding the critical temperature of a substance is important in various industrial processes, such as the production and storage of Carbon dioxide.

In conclusion, the critical temperature of Carbon dioxide is 30.98-degree centigrade, and it plays a crucial role in determining the behavior of the gas under different conditions.
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Directions:Read the passages and choose the best answer to each question.PassageA mercury thermometer, at an initial temperature of 20°C, was placed in 40°C water, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using water samples at 50°C and 60°C (see Figure 1). Next, the same thermometer, at an initial temperature of 60°C, was placed in an air sample at 50°C, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using air samples at 30°C and 40°C (see Figure 2).(Note: Assume that the temperatures of the water and air samples did not change during the measurements.)Q.According to Figure 2, for an air temperature of 30 C, over which of the following time intervals was the thermometer reading changing most rapidly?

Directions:Read the passages and choose the best answer to each question.PassageA mercury thermometer, at an initial temperature of 20°C, was placed in 40°C water, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using water samples at 50°C and 60°C (see Figure 1). Next, the same thermometer, at an initial temperature of 60°C, was placed in an air sample at 50°C, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using air samples at 30°C and 40°C (see Figure 2).(Note: Assume that the temperatures of the water and air samples did not change during the measurements.)Q.Based on Figure 1, at 3.0 sec, the thermometer reading in the 40 C water most likely was closest to which of the following?

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Which of The following is a critical temperature for Carbon dioxide?a)32-degree centigradeb)30.98-degree centigradec)40-degree centigraded)30.91 degree KelvinCorrect answer is option 'B'. Can you explain this answer?
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