Calclate its volume after compression?

AI Thread Summary
To determine the volume of a gas after compression, the initial conditions are a volume of 0.1 m^3, pressure of 140 kN/m^2, and temperature of 25 degrees Celsius. The gas is compressed to a pressure of 700 kN/m^2 and a temperature of 60 degrees Celsius. Using the ideal gas law equation, the final volume after compression is calculated to be 0.022 m^3. It is confirmed that the calculation is correct, and attention to units is emphasized. The discussion highlights the application of the ideal gas law in solving for volume changes under varying pressure and temperature conditions.
speedy46
Messages
46
Reaction score
0

Homework Statement



A gas at an initial volume of 0.1 m^3, a pressure of 140 kN/m^2 and a temperture of 25 degrees is compressed to a pressure of 700kN/m^2 and a temerture of 60 degrees.

Determine its volume after compression?

Homework Equations



P1 × V1 = P2 × V2
T1 T1


The Attempt at a Solution



P1 = 140Kn/m^2
V1 = 0.1 M^3
T1 = 298 K

P × V = 140 × 0.1 = 0.04
T 298

P1 = 700kN/m^2
V1 = ?
T1 = 333 K

I need to find V1 and need help to show me how to get this value please thanks In advance.
 
Last edited:
Physics news on Phys.org
Is it an ideal gas? Use the equation

\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}

It follows from PV = NkT.
 
V2 = p1v1t2 / t1p2


v2= 140,000, 0.1, 333.15 / 298.15, 700000 = 0.022

is this correct
 
Yes. Don't forget the units.
 
Thank you
 
Thread 'Have I solved this structural engineering equation correctly?'
Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
Back
Top