Question

A 3.5 L sample of gas at 25oC has an initial pressure of 86.7 kPa. The pressure of the gas decreases to 56.7 kPa as the gas expands to volume of 8.00 L. What is the new temperature of the gas?

1. 445 K
2. 199 K
3. 310 K
4. 85.3 K

Answer 1

445K

Step-by-step explanation:

according to universal gas theoreme, p1v1/T1=p2v2/T2

therefore, T2=(56.7×8×298)/(3.5×86.7)

≈445K