Caloric Content of Food

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Caloric Content of Food obseRvations & Calculated Values (Calculated values have the yellow background.) Data Table 1: Food Item - Observations | Food Item Description: | Marshmallow | Peanut / Walnut | Other Sample | Mass of food & holder – initial | 30.6 g | 28.8 g | 28 g | Mass of food & holder – final | 30.3 g | 27.5 g | 27.8 g | Mass of food burnt | 2.8 g | 0 g | 0.2 g | Mass of beaker | 56.7 g | 56.7 g | 56.7 g | Mass of beaker & water | 105.6 g | 105.6 g | 105.6 g | Mass of water | 48.9 g | 48.9 g | 48.9 g | Water temp. – initial | 25 °C | 25 °C | 25 °C | Water temp. – final | 26 °C | 50 °C | 27 °C | ΔT (oC change) | 1 °C | 25 °C | 2 °C | Heat Energy gained by water | 12.97 J | 5114.94 J | 17.51 J | Heat Energy per gram | 4.184 J/g | 3934.57 J/g | 35.02 J/g | QUestions Which of the foods tested contains the most energy per gram? I used a cashew instead of a peanut, so the cashew. How do your experimental results compare to typical experimental values (listed in the procedure)? Not that close. Using the typical energy values for the three food groups (carbohydrates, 4 Cal/g; protein, 4 Cal/g; and fats 9 Cal/g), calculate the Calories in a bag of your favorite snack food. (Look on the nutrition label to get the information needed to do this problem.) * * For comparison, how many Calories does the label say are in the

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