Sunday

February 1, 2015

February 1, 2015

Posted by **niki** on Friday, April 22, 2011 at 6:37am.

- physics -
**drwls**, Friday, April 22, 2011 at 7:01am(a) In an isothermal expansion,

P*V = constant = Po*Vo

P(final)/Po = Vo/V(final)

= 435/1310 = 0.332

Use that and the initial pressure to get the final pressure.

(b) Work done by gas =

Integral of P*dV = (Po*Vo)*Integral dV/V

= Po*Vo ln(1310/435)

Make sure P is in units of Pascals, and Volume in m^3, to get work in Joules.

(c) For adiabatic expansion of a monatomic gas,

P*V^(5/3) = constant = Po*Vo^(5/3)

Pfinal/Po = (0.332)^5/3 = 0.159

(d) Calculate the P*dV integral again, this time using the adiabatic relationship for P(V).

P (V) = [Po*Vo^(5/3)]/V^5/3

**Answer this Question**

**Related Questions**

physics - An ideal monatomic gas initially has a temperature of 338 K and a ...

physics - An ideal monatomic gas initially has a temperature of 338 K and a ...

physics- vry urgent - An ideal monatomic gas initially has a temperature of 333 ...

physics - 10 moles of a gas initially at temperature 300 K is compressed ...

College Physics - 7 Moles of a gas initially at temperature 300 K is compressed ...

CHEMISTRY!! D: - 1. A sample of gas under a pressure of 622 kPa has a volume of...

Chemistry;HELP - 1. A sample of gas under a pressure of 622 kPa has a volume of...

Intro to Physics - (a) An ideal gas occupies a volume of 3.0 cm3 at 20°C and ...

physics/chemistry - (a) An ideal gas occupies a volume of 1.0 cm3 at 20°C and ...

Physics - (a) An ideal gas occupies a volume of 1.6-cm3 at 20°C and atmospheric ...