# Exam%202002 - Last Name Student ID First Name MATERIALS...

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

continued on page 2 1 2 3 4 5 6 7 8 9 10 11 12 Last Name: _____________________________ First Name: __________________________ Student ID#: _________________________ MATERIALS 2O03/ENGINEERING 2O03 DAY CLASS Profs. D. Wilkinson and N. Provatas DURATION OF EXAMINATION: 3 hours McMaster University Final Examination December 2002 This examination contains 9 pages and 12 questions. You are responsible for ensuring that your copy of the paper is complete. Bring any discrepancy to the attention of your invigilator. SPECIAL INSTRUCTIONS: Aids allowed: 1 page crib sheet, nominally 8½ by 11 in. McMaster standard Casio FX-991 calculator Answer all questions on the examination copy. Be sure to show your work so that part marks can be awarded for incomplete answers. Be sure to include units with all answers that require them. Marks will be deducted for using an inappropriate number of significant digits in your final answer. For multiple choice questions: Circle the letter(s) to indicate your answer Marks will be deducted for incorrect answers – circle only those for which you are confident of the answer. The value of each question is shown. The total for the exam is 100 marks. Marks [10] 1. Salt is often spread on roads during the winter in order to depress the freezing point of water. A binary phase diagram for water and salt (NaCl) is shown below.

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

View Full Document
MAT 2O03/ENG 2O03 Final Examination, December 2002 page 2 continued on page 3 Marks a) What are the two phases that exist in equilibrium in the region of the phase diagram labeled “field (Z)”? b) At -10°C determine the overall composition for which equal amounts of these phases exist in equilibrium. c) What are the compositions of each phase under these conditions? d) What is the lowest temperature at which adding salt can prevent water from freezing completely?
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern