Chem Lab
Name: |Date:|
Exp 10: Caloric Content of Food||
Your Data:
|First Item|Second Item|Third Item|
What Food are you using||||
||||
Mass of empty beaker||||
Mass of beaker and water||||
Net Mass of the water||||
||||
Initial mass of food and holder||||
Final mass of burnt food and holder||||
Net Mass of the burnt food||||
||||
Initial temp of the water||||
Final temp of the water||||
∆ T in C (change in temperature)||||
Calculations: Show your numbers in the following calculation equations.
First Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal
Second Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal
Third Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal
Exp 10: Caloric Content of Food||
Your Data:
|First Item|Second Item|Third Item|
What Food are you using||||
||||
Mass of empty beaker||||
Mass of beaker and water||||
Net Mass of the water||||
||||
Initial mass of food and holder||||
Final mass of burnt food and holder||||
Net Mass of the burnt food||||
||||
Initial temp of the water||||
Final temp of the water||||
∆ T in C (change in temperature)||||
Calculations: Show your numbers in the following calculation equations.
First Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal
Second Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal
Third Item_________________
Heat (q) gained by the water ____J q = ΔT x mass of the water x (4.184 J/g˚C )
Where ΔT = Tfinal – Tinitial of the water
Heat energy gained per gram of food ____J/g
Divide q determined above by the net mass of the food item
Convert J/g to Cal/g ____Cal/g
4.184 J = 1 cal 1000 cal = 1 Cal