Modern extraction techniques can be based on dissolving material in supercritical
ﬂuids such as carbon dioxide. How high are pressure and density of carbon
dioxide when the pressure and temperature are around the critical point. Repeat
for ethyl alcohol.
Procedure for Solving General Thermodynamics
Problems Involving Balances
1. THINK! What can you anticipate with regard to the answer
and/or the nature of the path to the solution.
2. Define the system boundaries clearly. What is inside vs.
Due: Friday, Sep 4 before class
Total points - 100
This homework only consist of several simple warm—up problems.
1. An electric dip heater is put into a cup of water and heats it from 200C
to 800C. Deﬁne the system. Show t
November 15, 2013
Write complete mass and energy balances for each
problem. Write an entropy balance for problem 1
only. Define the system carefully for each problem!
Problem 1 [20 po