CHE112H1 Midterm: CHE112H1_20159_631456424390CHE112 2015 Midterm Solutions

• School: UTSG
• Department: Chemical Engineering and Applied Chemistry
• Course: CHE112H1
• Professor: All

Document Summary

The marks for each question are indicated in [square brackets]: the mid-term counts for 20% of your final grade, university of toronto approved calculators only. Using more than one indicate the total (eg. , 1 of 2, 2 of 2 on. A sample was found to contain. 16. 22% carbon, 2. 72% hydrogen, 37. 84% nitrogen and 43. 22% oxygen by mass. It"s molar mass of 222. 12 g/mol. (a) determine the empirical formula of the compound. (b) determine the molecular formula of the compound. Report your pressures in atm and then convert to mpa for % difference calculation . For co2, the van der waals constants are: a = 3. 610 atm dm6 mol - 2 and b = 0. 0429 dm3mol- 1. Assume oxygen behaves as an ideal gas. 100oc, and then finally vapourize it at that temperature. The standard enthalpies of fusion and vapourization for water are 6. 01 kj mol- 1 and 40. 7 kj mol- 1, respectively.