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Lecture

Discussion Ch.2 & 3.docx

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Department
Chemistry
Course
CHEM 1161
Professor
Schlegel
Semester
Fall

Description
Discussion Ch.2 & 3 Monday, September 17, 2012 5:56 PM 47 g Ice melts in water (9⁰C--> 0⁰C) ∆H= m x ∆T x SH = m(9) x (4.184) = 334 J/ g 42 g 334 J g =14028 J When 2.0 g of gasoline burns, it releases 11 kcal of heat. The density of gasoline is 0.74 How many megajoules are released when 2.0 gal of gasoline burns? 2 gal gasoline 1g--> 11 kcal Density- 0.74g/mL 2 gal 3785.41 mL 0.74 g 11 kcal 1000 cal 4.184 J 1 MJ 6 1 gal 1 mL 1 g 1 kcal 1 cal 10
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