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Exam 1 - Chemical Engineering Material and Energy Balances | CHEN 2120, Exams of Chemistry

University of Colorado Boulder (CU Boulder)Chemistry
Prof. Janet De Grazia

Material Type: Exam; Professor: De Grazia; Class: Chemical Engineering Material and Energy Balances; Subject: Chemical Engineering; University: University of Colorado - Boulder; Term: Fall 2009;

Typology: Exams

2009/2010

Uploaded on 11/07/2010

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CHEN-2120, Fall, 2009 Exam 1 – Closed Book
You Must Show All Work in order to receive credit! Correct solutions without
shown work will receive no credit!
Please print your name on this cover page and sign your name on this cover sheet as
indicated below. Thanks. Good Luck!!
Name _______________________________
Signature_____________________________
pf3

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CHEN-2120, Fall, 2009 Exam 1 – Closed Book You Must Show All Work in order to receive credit! Correct solutions without shown work will receive no credit! Please print your name on this cover page and sign your name on this cover sheet as indicated below. Thanks. Good Luck!! Name _______________________________ Signature_____________________________

  1. The density of a certain liquid is given by:  = ( A + Bt)e)eeCP where  = density in lbm/ft^3 t)e = temperature in degrees F P = pressure in psi The equation is dimensionally consistent. What are the units of A, B and C? (5 pts) A: lbm/ft^3 B: lbm/ft^3 - oF C: 1/psi
  2. Given data for Z, P and V, how would you solve for a, b and c in the following equation: Z = aVbPc^ (5 pts) a) linearize – ln Z = ln a + b ln V + c ln P b) set up a spread sheet with columns ln Z, ln V and ln P c) use regression such that the y input is ln Z and the x input is ln V and ln P d) the intercept is ln a, so take e(ln a) for a; the x1 variable is b and the x2 variable is c