Slide 1 Slide 2 Energy Lecture 4 Hesss Law & Review Slide 3 Calculating Enthalpy Change A theoretical way to determine H for a chemical reaction is provided by Hesss…

Slide 1 Slide 2 ENTHALPY (H) Accounts for heat flow in chemical reactions happening at constant pressure when work is performed due to P-V change. The enthalpy of a substance…

Slide 1Prentice-Hall © 2002General Chemistry: Chapter 8Slide 1 of 32 Chapter 8: The Atmospheric Gases and Hydrogen Philip Dutton University of Windsor, Canada Prentice-Hall…

Slide 1Chapter 17 Energy Slide 2 Energy u The ability to do work or cause a change u Work- using force to move something Symbol is w u Thermochemistry- studies energy changes…

Slide 1Notes: Equilibrium: Le Châteliers Principle (18.1 & 18.2) Topics: Reversible Reactions Equilibrium Constant Le Châteliers Principle Slide 2 Reversible Chemical…

Slide 1Enthalpies of Formation An enthalpy of formation, H f, is defined as the enthalpy change for the reaction in which a compound is made from its constituent elements…

Slide 1Ecosystems and Energy Chapter 3 Slide 2 What is Ecology? Ecology – study of the interactions among organisms and between organisms (biotic) and their abiotic environment.…

Slide 1AH 13-03-2010 Slide 2 Objectives Introduce the second law of thermodynamics. Discuss thermal energy reservoirs, reversible and irreversible processes, heat engines,…

Slide 1 Slide 2 Thermal energy is transferred through the hydrosphere from warmer latitudes to cooler polar regions largely due to global winds. Slide 3 The specific heat…

Slide 1Reaction Rates (cont.) Energy in a Reaction (p.11) Slide 2 Experimental Measurement of Reaction Rates (p.11t) Here is a typical plot of [reactant] vs. time: The rate…