Lecture_Notes_092509a

# Lecture_Notes_092509a - 3 is heated in a kiln CaCO 3(s Æ...

This preview shows pages 1–11. Sign up to view the full content.

STP and Molar Volume y Standard temperature and pressure, 0 o Cand1atm. y Molar volume – one mole of any gas a STP will occupy 22.4 L

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Gas Density y We can determine the molar mass of a molecule given the density of the gas at a particular temperature and pressure.
The density of a gaseous compound is 0.915 g/L at 1.3 atm and 300 K. What is the molar mass of this compound? 1. 7 3 2 g/mol 1 . g / m o l /mol 5% 2% 93% 1. 1.732 g/mol 2. 17.32 g/mol 3. 173.2 g/mol R = 0.08206

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Gas Density y A compound has an empirical formula of CHCl. A 256 mL flask at 273 K and 750 torr contains 1.090 g of the compound. What is the molecular formula of the coumpound?
Chemical Reactions Including Gases y What volume of CO 2 gas at STP is produced when 152 g of CaCO 3 is heated in a kiln: { CaCO 3(s) Æ CO 2 (g) + CaO (s)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Alternative Solution y What volume of CO 2 gas at STP is produced when 152 g of CaCO

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 3 is heated in a kiln: { CaCO 3 (s) Æ CO 2 (g) + CaO (s) Explosions and Implosions y Kingdome in Seattle N CH 3 N H N H O O O O O O TNT trinitrotoluene Explosives y A hand grenade of about 141 mL contains TNT with d = 1.62 g/mL. What is the pressure buildup at 298 K when TNT decomposes? Partial Pressures y What happens when two ideal gases are mixed in a container? y Dalton’s Law: The pressure exerted by a gas in a mixture is the same pressure that would have been exerted if the gas were alone in the container. Mole Fractions y The number of moles of a particular gas divided by the total number of moles of gas present Partial Pressures y A gas mixture at 100 o C and 0.8 atm is made of: 50% He and 50% Xe by weight. What are the partial pressures of He and Xe?...
View Full Document

## This note was uploaded on 10/14/2009 for the course CHEM 105ALg at USC.

### Page1 / 11

Lecture_Notes_092509a - 3 is heated in a kiln CaCO 3(s Æ...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online