Convert 915 mmHg into Pascals

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Presentation transcript:

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

Ideal Gases

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 22.414 L

Ideal Gas Law PV = nRT R is the gas constant .082057 L·atm/K·mol at STP

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

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?

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?

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.