Before Bell Rings Grab paper from side table Turn in Boyle’s Law lab on front table Have your notebook out for me to check.

Plan for Today Entry Task Gas Laws Equations and Problems Work Time

Moles + Stoic Test If you need to take/complete the test from last unit, come by this week during PH, before, or after school. Getting graded should be in this week

Cell Phones Don’t forget about the cell phone policy I see it out, you put it in a paper bag. Let me know if you need to have your phone out.

ETD 41 2018 A 2.0 liter tank of oxygen gas is at a pressure of 3.5 atm. What volume of oxygen will be available if the oxygen is used at a pressure of 752 mm Hg? B. Save Room For B

Write on ETD 41A A 2.0 liter tank of oxygen gas is at a pressure of 3.5 atm. What volume of oxygen will be available if the oxygen is used at a pressure of 752 mm Hg?

ANS on ETD 41A A 2.0 liter tank of oxygen gas is at a pressure of 3.5 atm. What volume of oxygen will be available if the oxygen is used at a pressure of 752 mm Hg?

ETD 41B Draw and Explain How I did this ETD 41B Draw and Explain How I did this? Balloon in Flask: How did I do this?

ETD 41B: Draw + Explain How did I do this? Private Answer in ETD Share with elbow partner With Lab Group Use White Board = One Best Answer Present Chance to Revise Class Theory

ANS ETD 41B. Draw and Explain How I did this ANS ETD 41B. Draw and Explain How I did this? Balloon in Flask: How did I do this?

ANS ETD 41B. Draw and Explain How I did this ANS ETD 41B. Draw and Explain How I did this? Balloon in Flask: How did I do this?

Learning Targets I can use the relationships between T, P, and V to solve word problems.

PT Fire Piston Demo

GET OUT Your Notes

Standard Temp + Pressure ST = 0 ºC or 273 K SP = 1.00 atm STP Standard Temp + Pressure ST = 0 ºC or 273 K SP = 1.00 atm

2 Lab Review Boyle’s law P1/T1 = P2/T2 P1V1 = P2V2 Gay-lussac’s Law P1V1 = P2V2 P and V units don’t matter, but must be the same on both sides. P1/T1 = P2/T2 P units same on both sides; but… Temperature MUST BE IN KELVIN!

Write on Consider this scenario … A basketball that has a pressure of 22 lb/in2 is left outside at a temperature of 10.°C. Over night the temperature drops to -10.°C. 1. Will the basketball’s P decrease or increase? 2. What will be the new P of the basketball?

Consider this scenario … A basketball that has a pressure of 22 lb/in2 is left outside at a temperature of 10.°C. Over night the temperature drops to -10.°C. Will the basketball’s pressure decrease or increase? Explain why your answer makes sense. IMPORTANT!! Anytime temperature is in a gas law you must convert it to KELVIN! What will be the new pressure of the basketball? P1/T1 = P2/T2  (22 lb/in2)/283 K = P2/263 K P2 = 20 lb/in2

Learning Targets I can use the relationships between T, P, and V to solve word problems.

Homework Pressure vs. Temp Lab – Due next class. If your data doesn’t give a nice trend line, see me and I will get you better data. Boyle’s Law WS – Due next class. VERY IMPORTANT– Bring an empty aluminum pop can to next class!!