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Comparison Of The Energy Content Of Different Food's

540 words - 3 pages

Aims: to compare the energy contents of different foods and make a detailed conclusion and analysis.Results:Starting temperature of water in each boiling tube: 23ºcFoodMass before heating (Grams)Highest temperature of water (ºc)Toasted Bread2.1832Cracker0.8945Chip0.6352Pistachio0.3590Almond1.0067Peanut0.9192Calculations:Start temperature of the water x Highest temperature of water x 4.2= Energy Level(ºC) (ºC) (J)Toasted bread: 23 x 32 x 4.2= 3091.2 J= 3.0912 kJCracker: 23 x 45 x ...view middle of the document...

694/ 0.35= 24.8 kJPeanut: 8.8872/ 0.91= 9.7 kJChip: 5.0232/ 0.63= 7.9 kJAlmond: 6.4722/ 1.00= 6.5 kJCracker: 4.347/ 0.89= 4.9 kJToasted bread: 3.0912/ 2.18= 1.4 kJPublished energy values:Peanuts, Salted: 23.9 kJBread, White & Toasted: 10.6 kJChip: 9.9 kJCracker: 9.0 kJConclusion: My results did not turn out to be the same as the published results because the published results were done in a Calorimeter under a controlled supply of oxygen and heat, unlike mine. The brand of the product may have also have made a great difference between the published results and mine. I think my toasted bread was rouge because it was nowhere near the published values. And I was very surprised to find out that the Pistachio has the highest energy value because I was predicting the normal peanut due to its greasiness. I think that my experiment went extremely well as I did not make any errors and was one of the first in the class to finish. If I were to do this experiment again I would hope to use a calorimeter in order keep a steady supply of oxygen and heat. My calorimeter also might help me make sure the food it fully combusted.

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