Fall 2019 312 HW list
Exam 1
1) How Much Air Can you blow into a PVC Pipe?
- As an in class demonstration/activity, i asked the students to determine how much air they can blow inside of a sealed PVC pipe. They were given a 3' PVC pipe (0.5" diameter), a Vernier LabQuest, pressure sensor and the required stopper with single hole. The students were asked to measure the maximum pressure they could exert inside of the pipe and from this determine how much air they "blew" into the sealed pipe.
- Required calculations; a) volume of pipe, b) mass/moles of air added from difference (or increase) in pressure upon blowing.
- Approximate answer: ~0.1 atm increase --> ~5e-4 moles of air or ~14 mg of air.
- a simple reciprocating internal combustion engine - lab calculation, not collected
2) Calculate the amount of work done in compressing 90 L of gas to a final volume of 70 L under a constant pressure of 2.5 bar. (show all work)
3) Book Problems on ideal gas calculations - P1.3 and P1.11
4) Adiabatic Calorimeter calculation handout/Electrical energy handout
- Kinetic Molecular Theory of Gases ( not collected)
5) Heating/Cooling Curve for Water Handout
6) LAB: Absolute Zero determination via a Pressure thermometer.
7) Graph: Temp vs. Heat Capacity of Liquid Water (based on values in Heating/Cooling Curve handout - #5 above)
8) Indicator Diagrams/Calculation of Work - 4 pages
9) Redo Ex. Prob 2.5 (q, w, H, U calcs)
EXAM 2
1) Example problem 3.1 - Derivatives
2) Lab 9/26 – Thermometers
3) In-class example/practice integrals (how much heat required to increase 1 mol CO2 gas from 298K to 800K).
4) Fully write out notes on how dP is a function of V and T (P(V,T) with and .
5) Lab 10/3 - Adiabatic Expansion (Big Bottles)
6) Thermometer volumes/Excel Global variables
7) Example problem 3.6
8) Lab 10/17 – Solution Call activity with Tf estimation/Igor fitting
9) Lab 10/24 – Bomb Cal Activity
10) Self-heating work sheet
11) Bomb Calorimeter worksheet
Exam 3
1) Post Exam 2 handout on thermometer (DT, DV, DP)
2) Post Exam 2, redo a calorimetry experiment
3) Ex. Prob. 5.1 - Engine efficiency
4) in-class problem - Calc of DS as a function of DV DT
5) in-class problem - Calc of DS as a function of DP DT
6) Ex, Prob. 5.9 - Calc of DS
7) US Energy Trends (2 page paper)