week 22 - 2/7

mon

objective: observe properties of dry ice

lesson: dry ice day. lesson: finish ch10 iodine bottle

lesson: l triple point with cyclo hexane; triple pt with carbon dioxide,

hw p 375 (e355) #1-6

tue

Objective: explain capillary action & surface tension; continue to explore kinetic theory; use phase diagrams to predict state of matter

lesson: go over hw ; surface tension with paperclip; drops on penny; capillary action & siphon with glass elbow (if not done) ;

hw gas laws 2 ; show algebra work in notebook

wed

objective: Use kinetic theory to explain pressure

lesson: go over hw; butane boiling cold; notes on dalton and and igl; work on book problems

hw. igl problems, show work in notebook

hw p 390 (e371) #10,11, 22,31

thur

Objective: Collect butane over water and observe properties; calculate moles

lesson: prelab video butane lab and do ch11 butane lab; collecting a gas by water displacement; go over problems if time permits

hw ch11 butane lab calculations, conclusion questions, and fill in form. (if missing, use my data from imbedded video)

fri

Objective: Use gas laws in the calculation

lesson: go over homework; discuss butane lab; notes on ideal gas law and combined gas law; start gas stoichometry lab prep video; if time permits

hw. show work in notebook

1 50. mL of gas at 1.0 atm is compressed to 2.8atm. What is the new volume?

2 A spray can at 2.0 atm is heated from 23 degrees C to 100. degrees C. What is the new pressure?

3 18L of gas at 23degrees C is heated to 90. degrees C. What is the new volume?

4 What will be the volume at STP of a gas, if its volume at 23.C and 80.kPa is 65mL?

5 0.25 moles of gas would have what volume at 100.C and 700.torr?

6. 500mL a gas at 23 degrees celsius and 1 atm is heated and the pressure increases to 780torr and the volume to 1L. What is the final temp of this gas in celsius?

7. 64grams of methane gas would have what volume at 100Kpa and and 100 degrees C?

8. What is the pressure of 28g dry butane if it is collected over water at 25 degrees C and 100Kpa room pressure? What would be its predicted volume in mL?

9 What is the pressure of hydrogen collected over water at 763mmHg total pressure and 27C?

10 solve igl equation for R in atm (hint; use standard conditions)

tri 2 exam rev available day of the exam, to be tweaked