CHBE 241 Material and Energy Balances
Department of Chemical and Biological Engineering
The University of British Columbia
Assignment #2
Due: Monday, 6 October 2008, 4:30pm CHBE Main Office
1. Assume air is an ideal gas. What is the density of air at 0
◦
C and 1 atm, in units of kg/m
3
?
What is the approximate mass (in tonnes) of a cubic mile of air? The density of water is
approximately 1000 kg/m
3
, and that of gold is 19,310 kg/m
3
. If a typical textbook were
made out of air, water, or gold, about what would it weigh in pounds?
2. Air flows into a reactor at 16 kg/min. Plot the volumetric flow rate (m
3
/min) at a range of
temperatures from 20
◦
F to 300
◦
F (step 20
◦
F) at 20 psia pressure, and at a range of pressures
from 20 psia to 200 psia (step 20 psi) at 80
◦
F. Use the ideal gas law to model the specific
volume of air as a function of pressure and temperature.
3. Curious Carl is very curious: He wants to know if CO
2
really follows the ideal gas law.
To test this, he puts 1 mol CO
2
into a rigid container with a volume of 22.414 L. Then
Curious carefully changes the temperature of the container and measures the pressure. After
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Winter '08
 ali
 white pigment powder

Click to edit the document details