Lacey_Che131_S2012_Lect-12s

Lacey_Che131_S2012_Lect-12s - Lec-12:...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lec-12: Energy/Thermochemistry Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 1 Fuels/Energy U.S. uses ~ 1.0 x 10 6 kJ of J fuel per day. Most from petroleum and natural gas. Remainder from coal, nuclear, and hydroelectric. Fossil fuels are not Fossil fuels are not renewable renewable . Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 2 Fuels/Energy Fusion Reactions in the sun provide the energy required sustain life on Earth Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 3 to sustain life on Earth Fuels/Energy Harnessing other ources of energy sou ces o e e gy Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 4 Fuels/Energy uel value = energy released when 1 g of uel value = energy released when 1 g of Fuel value energy released when 1 g of Fuel value energy released when 1 g of substance is burned. substance is burned. ydrogen has great potential as a fuel with a fuel value Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 5 Hydrogen has great potential as a fuel with a fuel value of 142 kJ/g. Energy/food Energy in our bodies comes from carbohydrates and fats (mostly). Intestines: carbohydrates converted into glucose: C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O, H = - 2816 kJ Fats break down as follows: 2C 57 H 110 O 6 + 163O 2 114CO 2 + 110H 2 O, =- 5,520 kJ H 75,520 kJ Fats: contain more energy; are not water oluble so are good for energy storage Roy A. Lacey, Stony Brook University; Che 131, Spring 2012 6 soluble, so are good for energy storage....
View Full Document

Page1 / 6

Lacey_Che131_S2012_Lect-12s - Lec-12:...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online