1. Convert 915 mmHg into Pascals
WARM UP
Calculate the pressure of a gas in a reaction if it holds up an external air pressure of 785 mmHg and moves a mercury column 59 mm.
Convert .76 atm into mmHg
Convert 915 mmHg into Pascals

2. Ideal Gases

3. Ideal Gas Law Deals with ideal gases… … at STP
Ideal gases are in a small volume compared to the container, and have particles that don’t attract or repel one another
… at STP
standard temperature (0° C) and pressure (1 atm)
1 mole of a gas occupies L

4. Ideal Gas Law PV = nRT R is the gas constant
L·atm/K·mol at STP

5. WRAP UP
List 4 assumptions we make about the behavior of ideal gases, or about the properties of gases in general.

6. WARM UP
Hydrogen and helium are mixed in a 20.0 L flask at room temperature (20°C). The partial pressure of the hydrogen is 250 mmHg and that of helium is 75 mmHg. How many grams of H2 and He are present?

7. WRAP UP
A sample of nitrogen gas was bubbled through liquid water at 25°C and then collected in a volume of 750 cm3. The total pressure of the gas, which was saturated with water vapor, was found to be 740 mmHg at 25°C. The vapor pressure of water at this temperature is 24 mmHg. How many moles of nitrogen were in the sample?

8. What does this mean to you?
WARM UP
“Self-knowledge is the beginning of self-improvement.” – Baltasar Gracian
What does this mean to you?
Identify one thing you could realistically improve on over the next month.