Practice: An energy efficient refrigerator uses 780 kWh of electrical energy per year. How many kilocalories of electricity does it use in three years?
| Sections | |||
|---|---|---|---|
| Nature of Energy | 6 mins | 0 completed | Learn |
| Kinetic & Potential Energy | 8 mins | 0 completed | Learn |
| First Law of Thermodynamics | 7 mins | 0 completed | Learn |
| Internal Energy | 8 mins | 0 completed | Learn |
| Endothermic & Exothermic Reactions | 7 mins | 0 completed | Learn Summary |
| Heat Capacity | 16 mins | 0 completed | Learn |
| Constant-Pressure Calorimetry | 20 mins | 0 completed | Learn |
| Constant-Volume Calorimetry | 9 mins | 0 completed | Learn |
| Thermal Equilibrium | 9 mins | 0 completed | Learn |
| Thermochemical Equations | 12 mins | 0 completed | Learn Summary |
| Formation Equations | 9 mins | 0 completed | Learn |
| Enthalpy of Formation | 12 mins | 0 completed | Learn Summary |
| Hess's Law | 23 mins | 0 completed | Learn |
Thermochemistry is the study of matter and energy associated with chemical reactions or physical changes.
Classification of Energy
Concept #1: Nature of Energy
Concept #2: Energy Conversion Factors
Example #1: Which of the following statements deals with potential energy with nonchemical energy associated?
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