A sample of methane gas (CH4) at 13.2 C is either heated or cooled. The pressure

Question

A sample of methane gas (CH4) at 13.2 C is either heated or cooled. The pressure increases from 1.75 atm to 2.70 atm, and the volume of the sample changes from 2.30 L to 4.31 L. To what temperature, in C, was the methane heated or cooled? 0 Answer: Not yet answered Marked out of 1.00 Flag question A 49 L cylinder containing helium gas at a pressure of 20.8 atm is used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in atm) could a 271 L balloon be filled. Hint is given in the feedback. Answer

Explanation / Answer

T1 = 13.2°C = 13.2+273.15 K = 286.35 K

P1 = 1.75 atm

T2 = ?

P2 = 2.70 atm

V1 = 2.3

V2 = 4.31 L

find T2

Apply ideal gas law

P1V1/T1 = P2V2/T2

T2 = P2V2/(P1V1)*T1

T2 = (2.70/1.75)*(4.31/2.30)*286.35

T2 = 827.88 K

T2 = 827.88-273.15 = 554.73°C

Q2.

V = 49 L; P = 20.8 atm

P2 max ifV = 271 L

apply

P1V1 = P2V2

20.8*49 = 271*P2

P2 = 20.8*49/271

P2 = 3.760 atm

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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