The substance methane has the following properties: normal melting point: 90.7 K

Question

The substance methane has the following properties: normal melting point: 90.7 K normal boiling point: 109.1 K triple point: 9.2 x 10^-2 atm, 90.6 K critical point: 45.7 atm, 190.7 K A sample of methane at a pressure of 1.00 atm and a temperature of 140.2 K is cooled at constant pressure to a temperature of 93.1 K. Which of the following are true Choose all that apply The final state of the substance is a solid. The final state of the substance is a liquid. The liquid initially present will vaporize. The sample is initially a gas. One or more phase changes will occur.

Explanation / Answer

Pressure is 1 atm

Temp is 93.1 K

see that Normal Melting point is 90.7 K and normal Boiling point is 109.1 K

We initially had 140.2 K and finally 93.1 K

Hence we initially had gas phase.

Final state is liquid state.

One or more phase changes occur ( one change has occured gas to liquid)

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.