CHEM 105aLg Lecture 3: CHEM 105a Exam 3 Notes
Document Summary
Chapter 6 thermochemistry thermochemistry the relationship between matter and energy energy capacity to do work. 6. 2 the first law of thermodynamics total energy of the universe is constant: energy is neither created nor destroyed, energy can be transferred between objects, energy can be transformed from one form to another. 6. 3 components of energy heat (q) transfer of energy due to a temperature difference. Work (w) force acting over a distance. E = q + w: q and w are not state functions positive value system gains heat negative value system releases heat system gains energy from work done on it system releases energy by doing work q w. Molar heat capacity the energy required to raise 1 mol of a substance. When heat (q) flows into a system, the temperature increases by 1 c (or 1k) 6. 4 heat q = m cs t: q = heat, cs = system"s specific heat, m = mass of system, t = temperature increase.
