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record this value as final temperature of water. Allow the charcoal-like residue from the nut sample to cool to room temperature. Determine the mass of the residue and record its mass on your report sheet. Allow the can to cool to room temperature, remove the cardboard and thermometer, clean the black soot off the can, and pour the water from the can down the drain. Repeat the experiment again. Data sheet a. Type of nut used b. Mass of empty soft drink can, g C. 3 Mass of can + water d. Initial temperature of water, °C e. Final temperature of water, °C f. Mass of nuts, g g. Mass of residue after nut is burned h. Mass or water (line c-Line b) i. Temperature change AT °C j. Specific heat of water k. Energy absorbed by water, cal (Equation 2) o. Calorie content of nut sample(cal/g) Modifications to Improve Results: Trial Walnut 1. Energy released by nut sample, cal (Equation 1) m. Energy released by nut sample, Cal (Nutritional) n. Mass of nut consumed by combustion, g. 12.7 64.25 26 86 2.44 0.24 51-55 60. 1.0 cal/g °C Trial2 Walnut 12.7 67 24 75 1.36 0.1 54.3 51 79

record this value as final temperature of water. Allow the charcoal-like residue from the nut sample to cool to room temperature. Determine the mass of the residue and record its mass on your report sheet. Allow the can to cool to room temperature, remove the cardboard and thermometer, clean the black soot off the can, and pour the water from the can down the drain. Repeat the experiment again. Data sheet a. Type of nut used b. Mass of empty soft drink can, g C. 3 Mass of can + water d. Initial temperature of water, °C e. Final temperature of water, °C f. Mass of nuts, g g. Mass of residue after nut is burned h. Mass or water (line c-Line b) i. Temperature change AT °C j. Specific heat of water k. Energy absorbed by water, cal (Equation 2) o. Calorie content of nut sample(cal/g) Modifications to Improve Results: Trial Walnut 1. Energy released by nut sample, cal (Equation 1) m. Energy released by nut sample, Cal (Nutritional) n. Mass of nut consumed by combustion, g. 12.7 64.25 26 86 2.44 0.24 51-55 60. 1.0 cal/g °C Trial2 Walnut 12.7 67 24 75 1.36 0.1 54.3 51 79

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section: Chapter Questions
Problem 102GQ: Cloth can be waterproofed by coating it with a silicone layer. This is done by exposing the cloth to...
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record this value as final temperature of water. Allow the charcoal-like residue from the nut sample to cool to room temperature. Determine the mass of the residue and record its mass on your report sheet. Allow the can to cool to room temperature, remove the cardboard and thermometer, clean the black soot off the can, and pour the water from the can down the drain. Repeat the experiment again. Data sheet a. Type of nut used b. Mass of empty soft drink can, g c. Mass of can + water d. Initial temperature of water, °C e. Final temperature of water, °C f. Mass of nuts, g g. Mass of residue after nut is burned h. Mass or water (line c-Line b) i. Temperature change AT °C j. Specific heat of water k. Energy absorbed by water, cal (Equation 2) 1. Energy released by nut sample, cal (Equation 1) o. Calorie content of nut sample(cal/g) Modifications to Improve Results: Walnut m. Energy released by nut sample, Cal (Nutritional) n. Mass of nut consumed by combustion, g Trial 12.7 7 -64.25 26 86 2.44 0.24 51-55 60. 1.0 cal/g °C Trial2 Walnut 12.7 67 24 8² 75 1.36 0.1 54.3 51 79
Transcribed Image Text:record this value as final temperature of water. Allow the charcoal-like residue from the nut sample to cool to room temperature. Determine the mass of the residue and record its mass on your report sheet. Allow the can to cool to room temperature, remove the cardboard and thermometer, clean the black soot off the can, and pour the water from the can down the drain. Repeat the experiment again. Data sheet a. Type of nut used b. Mass of empty soft drink can, g c. Mass of can + water d. Initial temperature of water, °C e. Final temperature of water, °C f. Mass of nuts, g g. Mass of residue after nut is burned h. Mass or water (line c-Line b) i. Temperature change AT °C j. Specific heat of water k. Energy absorbed by water, cal (Equation 2) 1. Energy released by nut sample, cal (Equation 1) o. Calorie content of nut sample(cal/g) Modifications to Improve Results: Walnut m. Energy released by nut sample, Cal (Nutritional) n. Mass of nut consumed by combustion, g Trial 12.7 7 -64.25 26 86 2.44 0.24 51-55 60. 1.0 cal/g °C Trial2 Walnut 12.7 67 24 8² 75 1.36 0.1 54.3 51 79
leat } Thermometer Insulated container Sealed bomb 0₂(9) Sample cup Water Figure 1 As shown in figure 1, a calorimeter consist of an internal reaction chamber (sealed bomb), within a larger external container that is filled with water. When a chemical reaction occurs in the sealed bomb of the calorimeter, the heat released by the reaction is absorbed by the water is equal to the heat released by reaction. -ΔΗreleased= ΔΗabsorbed equation 1 The following equation use to calculate heat absorbed by water AH = m CAT equation 2 AH represent heat energy in cal, m represents mass of water in grams, C represent a specific heat of water, and AT is the change in water temperature in °C. Knowing the mass of the water in the external container, measuring the change in temperature of the water that occurs during the 77
Transcribed Image Text:leat } Thermometer Insulated container Sealed bomb 0₂(9) Sample cup Water Figure 1 As shown in figure 1, a calorimeter consist of an internal reaction chamber (sealed bomb), within a larger external container that is filled with water. When a chemical reaction occurs in the sealed bomb of the calorimeter, the heat released by the reaction is absorbed by the water is equal to the heat released by reaction. -ΔΗreleased= ΔΗabsorbed equation 1 The following equation use to calculate heat absorbed by water AH = m CAT equation 2 AH represent heat energy in cal, m represents mass of water in grams, C represent a specific heat of water, and AT is the change in water temperature in °C. Knowing the mass of the water in the external container, measuring the change in temperature of the water that occurs during the 77
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