102A Midterm 1

102A Midterm 1 - Prob 3 Air in a 0.5m3 cylinder is...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 2
Prob 3. Air in a 0.5m 3 cylinder is initially at a pressure of 10 bar and a temperature of 350K. The cylinder is to be emptied by opening the valve and letting the pressure drop to that of the atmosphere. What will be the temperature and mass of gas in the cylinder if this is accomplished? (a) In a manner that maintains the temperature of the gas at 350K? { 10points} Answer: The temperature (T=350K) and pressure (P=1.013 x 10 5 Pa = 1 atm) are known. Thus, there is no need to use balance equations 53 1.013x10 Pa * 0.5m 17.41 mol 8.314 J/mol K * 350K PV N RT == = 504.78g or 0.50478 kg (b) In a well insulated cylinder? For simplicity assume that the process occurs sufficiently rapidly that there is no heat transfer between the cylinder walls and the
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

102A Midterm 1 - Prob 3 Air in a 0.5m3 cylinder is...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online