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Units of Energy. James Joule 1818-1889. 1 calorie = heat required to raise temp. of 1.00 g of H 2 O by 1.0 °C. 1000 cal = 1 kilocalorie = 1 kcal 1 kcal = 1 Calorie (a food “ calorie ” ) SI units for energy: joule (J) 1 cal = exactly 4.184 J. Energy & Chemistry. Some Basic Principles - PowerPoint PPT Presentation
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