# Ttrtttr

Topics: Heat, Thermodynamics, Energy Pages: 6 (1440 words) Published: May 21, 2013
Heat Food Lab
* Purpose:
* Understand how to calculate calories per gram from burning food in the laboratory. * Understanding how to use the food nutrition label on the back of the package to calculate the calories per gram. * The calculated calories per gram in the laboratory are compared to the calories per gram that were calculated from the nutrition label. Then the % error and % yield are calculated and displayed in table and in a graph. * Students will be able to create a laboratory report in MS word and a MS power point. * Students will to be able to create a data tables and graphs through Microsoft Excel. * Hypothesis: If a better calorimeter is built after each trial, then the % error will decrease and the % yield will increase. * Independent variable: The Initial mass of a Cheeto, The End Mass of that cheeto, The initial temperature of the Water, The End Temperature of the Water. The Amount of Water that is used in the Experiment( Soda-Can) * Dependent variable: The Percent Error, The Percent Yield, calories per Gram. * Trials: 3 sets, And 3 Trials for each set; Total of 9 Trials * Constant: Shape; Form of the can, Glass Flask (200 ml), Form/ Shape of the Thermometer. * Control: The Accepted Value Calories (160000), Grams Per Serving (28g), calories per Gram ( 5714): Estimate]

Part 1
Table 1:Data|
| Temp Initial| Temp. Final| Mass of Chip(Start)| Mass of Chip(After Burn| Temp of H2O after Burn| Calories | Serving Size| Volume of H2O (ml)| Trial #1| 10| 11| 1.19| 0.19| 14| 160| 28| 200|

Trial #2| 11| 14| 1.17| 0.16| 14| 160| 28| 200|
Trial #3| 9| 14| 1.05| 0.15| 14| 160| 28| 200|
Explanation: The Table Above, Shows the Initial and End Temperature of the Water, and The Changes in mass of the Cheeto(Chip). This Table also shows the Calories, Serving Size and The Volume of H20 used in this experiment. Table 2: Accepted Value|

| Calories | Grams per serving| calories per Gram|
Trial #1| 160000| 28| 5714.285714|
Trial #2| 160000| 28| 5714.285714|
Trial #3| 160000| 28| 5714.285714|
| | Average| 5714.285714|
Explanation: Table two Shows the Calories, Grams per Serving, and calories per Gram. Table 3 Measured Value|
| Mass of the Cheap| Change Temp.| Specific heat of H2O| Mass of H2O (g)| Heat (cal.)| Heat(cal.)/g| trial 1| 1| 1| 1| 200| 200| 200|
trial 2| 1.01| 3| 1| 200| 600| 594.059406|
trial 3| 0.9| 5| 1| 200| 1000| 1111.11111|
| | | | | Average| 635.056839|
Explanation: This Table above Shows the Measured Value’s of The Mass of The Chip, The Change in Temperature, The Specific Heat of H20, The Mass of H20, The Heat (cal), And Heat (cal)/ Gram Table 4 Average Value|

| % Error| % Yield|
| -88.88650532| 11.113495|
Explanation: The Table Above Shows the Average Value; The Percent error and The Percent Yield of The Experiment. Part 2
Table 1:Data|
| Temp Initial| Temp. Final| Mass of Chip(Start)| Mass of Chip(After Burn| Temp of H2O after Burn| Calories | Serving Size| Volume of H2O (ml)| Trial #1| 24| 31| 1.94| 0.35| 14| 160| 28| 200|

Trial #2| 22| 25| 1.04| 0.26| 14| 160| 28| 200|
Trial #3| 9| 14| 1.05| 0.15| 14| 160| 28| 200|
Explanation: The Table Above Presents the Initial Temperature and Mass, Also the End Of the Temperature and Mass, The amount of Calories, The serving Size, and the Volume of h20(200ml). Table 2: Accepted Value|

| Calories | Grams per serving| calories per Gram|
Trial #1| 160000| 28| 5714.285714|
Trial #2| 160000| 28| 5714.285714|
Trial #3| 160000| 28| 5714.285714|
|  | Average| 5714.285714|
Explanation: The Table above shows the Amount of Calories , Grams Per serving , And Calories Per Gram. Table 3 Measured Value|
| Mass of the Cheap| Change Temp.| Specific heat of H2O| Mass of H2O (g)| Heat...