1.) A sample of sulfur dioxide at a pressure of 1.00 atm and a temperature of 20
ID: 636876 • Letter: 1
Question
1.) A sample of sulfur dioxide at a pressure of 1.00 atm and a temperature of 202 K is heated at constant pressure to a temperature of 245 K. Which of the following are true?
Choose all that apply
The gas initially present will solidify.
The final state of the substance is a liquid.
The sample is initially a liquid.
The sample is initially a solid.
No phase change will occur.
2.) The substance sulfur dioxide has the following properties:
A sample of sulfur dioxide at a pressure of 1.00 atm and a temperature of 245.1 K is cooled at constant pressure to a temperature of 202.2 K. Which of the following are true?
Choose all that apply
The solid initially present will vaporize.
The sample is initially a liquid.
The final state of the substance is a liquid.
The final state of the substance is a solid.
No phase change will occur.
3.) The substance neon has the following properties:
4.) A sample of neon is initially at a pressure of 27.6 atm and a temperature of 20.7 K. The pressure on the sample is reduced to 0.425 atm at a constant temperature of 20.7 K. Which of the following are true?
Choose all that apply
The sample is initially a solid.
The liquid initially present will solidify.
No phase change will occur.
The final state of the substance is a solid.
The final state of the substance is a gas.
normal melting point: 200.4 K normal boiling point: 263.1 K triple point: 1.7×10-3 atm, 197.6 K critical point: 78 atm, 430.7 KExplanation / Answer
1) The real sentences are:
The final state of the substance is a liquid.
The sample is initially a liquid.
No phase change will occur.
Since both conditions are between the melting point and the normal boiling point.
2) Same previous sentences:
The sample is initially a liquid.
The final state of the substance is a liquid.
No phase change will occur.
3) Correct sentences:
The sample is initially solid.
No phase change will occur.
The final state of the substance is a solid.
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