CHEM 102 1nd Edition Lecture 6 Outline of Last Lecture I. First law of thermodynamicsII. Temperature vs. heatIII. System vs. surroundingsOutline of Current Lecture IV. TerminologyV. Joule and CalorieVI. Specific heatVII. Heat of fusionVIII. Heat of vaporizationCurrent Lecture- Terminologyo Joule and calorie are units of heat, 1 calorie = 4.184 Jo Specific heat The amount of heat required to raise the temperature of 1g of the substance by 1 degrees Celsius with not change in stat Specific heat units of J/g(degrees Celsius) Heat=specific heat X mass X delta To Heat of fusion The amount of heat required to melt 1g of solid at its melting point Units: J/g H is also the amount of heat released when 1 g of liquid freezes at its freezing point Amount of heat = heat of fusion X masso Heat of vaporization The amount of heat required to vaporize 1 g of a liquid to a gas at its boiling point Units: J/g H is also the amount of heat released when 1 g of vapor condenses to 1 g of liquid at the boiling point Amount of heat = heat of vaporization X massThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a
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