The substance methane has the following properties: A sample of methane is initi
ID: 1009468 • Letter: T
Question
The substance methane has the following properties:
A sample of methane is initially at a pressure of 47.2 atm and a temperature of 79.4 K. The pressure on the sample is reduced to 9.20×10-2 atm at a constant temperature of 79.4 K. Which of the following are true?
Choose all that apply
1-The sample is initially a solid.
2-The final state of the substance is a gas.
3-The final state of the substance is a solid.
4-The gas initially present will solidify.
5-No phase change will occur.
normal melting point: 90.7 K normal boiling point: 109.1 K triple point: 9.2×10-2 atm, 90.6 K critical point: 45.7 atm, 190.7 KExplanation / Answer
there is no change will occur in this condition as methane is a gas and changing pressure at constant temperature will change the volume.
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