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Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

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Nut Calories – Pretzel Calories. Nut Calories – Pretzel Calories. Mass = 4.12g. Nut Calories – Pretzel Calories. Mass = 4.12g. Mass Al Cup= 27.65 g. Nut Calories – Pretzel Calories. Mass = 4.12g. Mass of Al and water = 96.54g. Nut Calories – Pretzel Calories. Mass = 4.12g. - PowerPoint PPT Presentation

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Page 1: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Page 2: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12g

Page 3: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass Al Cup= 27.65 g

Page 4: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al and water = 96.54g

Page 5: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al and water = 96.54g

Page 6: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al and water = 96.54gInitial Temp =22 oC

Page 7: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12g

Mass of Al and water = 96.54gInitial Temp 22 C

Heat

Page 8: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12g

Mass of Al and water = 96.54gInitial Temp 22 C

Heat

Page 9: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al and water = 96.54gInitial Temp 22 oC

Heat

Page 10: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al and water = 96.54gInitial Temp 22 oC

Heat

Page 11: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Page 12: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =

Page 13: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change)

Page 14: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change) ( mass of water)

Page 15: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change) ( mass of water) (specific heat capacity) + ( Al temp change) ( mass ofAl ) (specific heat capacity of Al)

Page 16: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change) ( mass of water) (specific heat capacity) + ( Al temp change) ( mass ofAl ) (specific heat capacity of Al)

Page 17: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change) ( mass of water) (specific heat capacity) + ( Al temp change) ( mass ofAl ) (specific heat capacity of Al)

Page 18: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change) ( mass of water) (specific heat capacity) + ( Al temp change) ( mass ofAl ) (specific heat capacity of Al)

Page 19: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released =( water temp change)( mass of water)(H2Ospecific heat capacity) + ( Al temp change) ( mass ofAl ) (specific heat capacity of Al)

Page 20: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= (96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C) +

Page 21: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= (96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C) +

Page 22: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= (96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C) +

Page 23: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= (96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C) +

Page 24: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C)) + (( 27.65g ) (48 C – 22 C ) (.21 cak / g C)

Page 25: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C)) + (( 27.65g ) (48 C – 22 C ) (.21 cak / g C))

Page 26: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C)) + (( 27.65g ) (48 C – 22 C ) (.21 cak / g C))

Page 27: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C)) + (( 27.65g ) (48 C – 22 C ) (.21 cak / g C))

Page 28: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) ( 1 cal / g C)) + (( 27.65g ) (48 C – 22 C ) (.21 cal / g C))

Page 29: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) * ( 1 cal / g C)) + (( 27.65g ) * (48 C – 22 C ) *(.21 cal / g C)) = 1942.109 cal = 1.9 x103 cal

Page 30: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) * ( 1 cal / g C)) + (( 27.65g ) * (48 C – 22 C ) *(.21 cal / g C)) = 1942.109 cal = 1.9 x103 cal

Page 31: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released= ((96.54g-27.65g)(48 C – 22 C ) * ( 1 cal / g C)) + (( 27.65g ) * (48 C – 22 C ) *(.21 cal / g C)) = 1942.109 cal = 1.9 x103 cal

Page 32: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal / 4.12 g =

Page 33: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal / 4.12 g =

Page 34: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal =461.16 cal/g 4.12 g

Page 35: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal =461.16 cal/g=4.6x102cal/g 4.12 g

Page 36: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal / 4.12 g = 461 cal / g=4.6x102cal/g 461 cal/g ( 1 kcal / 1000 cal ) = .46 kcal

Page 37: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

Heat released per gram = 1.9 x103 cal / 4.12 g = 461 cal / g461 cal/g ( 1 kcal / 1000 cal ) = .46 kcalAccepted Value from package = 110 Kcal / 28.3 g = 3.9Kal/g

Page 38: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

461 cal/g ( 1 kcal / 1000 cal ) = .46 kcalAccepted Value from package = 110 Kcal / 28.3 g = 3.9Kal/g% difference = (experimental – accepted ) / accepted * 100

Page 39: Nut Calories – Pretzel Calories

Nut Calories – Pretzel Calories

Mass = 4.12gMass of Al =27.65g Mass of Al and water = 96.54gInitial Temp 22 oCFinal Temp = 48oCHeat

461 cal/g ( 1 kcal / 1000 cal ) = .46 kcalAccepted Value from package = 110 Kcal / 28.3 g = 3.9Kal/g% difference = (experimental – accepted ) / accepted * 100% = (.46 Kcal/g -3.9 Kcal/g ) / 3.9 kcal/g * 100 = - 88 %

Page 40: Nut Calories – Pretzel Calories

Results: The following data can be used to:

Mass of cashew=1.34g

Mass of aluminium cup = 19.83g

Mass of aluminium cup and water=90.76g

Initial temperature of Al cup and H2O=21.2oC

Final temperature of Al cup and H2O=68.8oC

Specific heat capacity of water = 1.0 cal / g oC

Specific heat capacity of Al = .21 cal / g oC

1 Cal = 1 kcal = 1000 cal

1 cal = 4.18 J

1 kJ = 1000 J

Page 41: Nut Calories – Pretzel Calories

.Calculations / Conclusions

1. The heat released by the nut was absorbed by the Water and the Al cup.

The amount of energy absorbed by a substance is dependent on its specific heat capacity, its mass , and its temperature change.

Q= (mw tw * 1 cal / g oC) + (mAl tAl * .21 cal / g o

C)

Q = (90.76g – 19.83g) (68.8oC – 21.2oC) ( 1 cal/g oC) +

((19.83g) (68.8oC – 21.2oC) ( .21 cal/g oC))

Q= 3574.48 cal 3570 cal 3.57x103 cal

2. Determine the number of calories per gram of food burned.

cal = 3570 cal = 2664.179 cal / g 2.66x103cal/g

g (1.34g )

Page 42: Nut Calories – Pretzel Calories

3. Convert the number of calories per gram to Calories or kcal per gram.

2.66x103cal/g ( 1 kcal) = 2.66 kcal / g

(1000cal)

4. Convert the number of cal per gram to J per gram.

2.66x103cal/g ( 4.18 J) = 11,118.8 J / g 1.11x104 J/g

( 1 cal)

5. Convert the number of cal per gram to KJ per gram

1.11x104 J/g ( 1 KJ ) = 11.1 KJ/g

(1000 J)

Page 43: Nut Calories – Pretzel Calories

6. According to the packaging the nut should release 250 kcal per 42 grams.(cashews)

=5.95kcal/g

a) What is your percent error in your experiment?

% error = ( your value – accepted value ) * 100 =

( accepted value )

% error = (2.66 kcal/g – (5.95kcal/g))*100 = -55.3% error

(5.95 kcal/g )