DO NOW You must be silent and working for credit Be on time Enter silently Grab papers Immediately start work No talking Quiz reflection: How do you think you did? What do you now know you need help on? Our exam is next week, write down three specific actions you are going to take to make sure you are reaching our big goal!

DO NOW REVIEW How do you think you did? What do you now know you need help on? Our exam is next week, write down three specific actions you are going to take to make sure you are reaching our big goal!

ANNOUNCEMENTS/REMINDERS Exam next Wednesday Tutoring hours: Monday and Thursday 2:30-3:30 – take advantage!!!! Unit 5 exam still missing? The clock is ticking. You have until March 4th ONLY A WEEK LEFT UNTIL THE EXAM – LET’S ROCK OUT!

Key Point #1: The ideal gas law is used to predict the behavior of gases. The equation is PV=nRT.

Key Point #2: We have two new variables to deal with: n and R Key Point #2: We have two new variables to deal with: n and R. n =the number of moles; R is a “constant” number .0821 L*atm/mol*K. This means that R is ALWAYS that same number

Key Point #3: as n goes up, P and V will go up.

Key Point #4: A sample of gas at a pressure of 3 atm occupies a volume of 2.0 liters at 27° C. How many moles of the gas are there? GUESS METHOD! Bomb ball! Only throw to Ms. Herrick Throw nicely Violate the rules = detention

G: U: E: S:

INDEPENDENT PRACTICE 0.8 moles of an ideal gas are stored in a 5L container at 1.5atm. What is the Temperature of the gas? How many moles are contained in a 10L Helium gas container at 3.0atm and 200K? 2.0 moles of a gas in an 8L container is at 400K. What is the pressure of this gas?

EXIT TICKET As n increases, pressure and volume will (increase/decrease) 1.6 moles of an ideal gas are at standard temperature and pressure. What is the volume of this gas?